Patent Grant
11612786
Priority is claimed in the application data sheet to the following patents or patent applications, the entire written description of each of which is expressly incorporated herein by reference in its entirety:
Ser. No. 16/927,704
Ser. No. 16/867,238
Ser. No. 16/793,915
Ser. No. 16/255,641
Ser. No. 16/223,034
62/697,973
Ser. No. 16/176,511
Ser. No. 16/011,394
Ser. No. 15/853,746
Ser. No. 15/219,115
62/330,642
Ser. No. 15/193,112
62/330,602
Ser. No. 15/187,787
Ser. No. 15/175,043
62/310,568
Ser. No. 17/030,195
Ser. No. 16/781,663
Ser. No. 16/354,374
Ser. No. 16/176,511
Ser. No. 16/011,394
Ser. No. 15/853,746
Ser. No. 15/219,115
Ser. No. 15/193,112
Ser. No. 15/187,787
Ser. No. 14/846,966
Ser. No. 14/012,879
61/696,068
The disclosure relates to the field of health devices, and more particularly to devices and methods for rehabilitative and preventative neurological therapies.
Research increasingly highlights the importance of continued neurological stimulation throughout all stages of life including physical activity, social connection, and frequent cognitive challenge, especially when combined, in preventing early cognitive decline and onset of neurological disorders including Dementia. As well, athletes and competitors in various fields such as physical, digital, and cognitive competitions are increasingly seeking well rounded methods of neurological evaluation and conditioning for tasks directly and indirectly related to their mode of competition.
Recent research on mice suggests that administration of light and sound at frequencies of gamma oscillations (30 Hz to 100 Hz) can help delay the onset of neurological decline or even cause neurological regeneration through gamma entrainment (see, Adaikkan et al., Gamma Entrainment Binds Higher-Order Brain Regions and Offers Neuroprotection, 2019, Neuron 102, 929-943 Jun. 5, 2019, and Martorell et al., Multi-sensory Gamma Stimulation Ameliorates Alzheimer's-Associated Pathology and Improves Cognition, 2019, Cell 177, 256-271, Apr. 4, 2019). These studies have suggested that light and/or sound-based gamma entrainment causes physical changes in the brain by stimulating oscillations in the electrochemical state of neurons in a way that reduces inflammation and increases synaptic density, and have suggested that gamma entrainment using simultaneous application of light and sound has a greater effect than gamma entrainment using only light or sound individually. The physical changes observed included reductions in amyloid plaques and tau phosphorylation, and decreases in neuronal and synaptic losses.
However, the studies performed to date are generalized in nature and do not provide specific systems or methods whereby this knowledge may be applied to humans. Further, these studies do not suggest any means for targeting the particular areas of the brain or particular neurological functionality affected by certain neurological disorders. These studies also fail to consider application of gamma entrainment through stimulation other than light or sound or application of multi-modal gamma entrainment other than simultaneous application of light and sound. Additionally, these studies do not explore the effects of treatment regimens of entrainment to frequencies inducing brain activity other than gamma waves or utilizing a combination of frequencies at various intervals.
What is needed is a system and method for application of brainwave entrainment therapies to humans that allows for targeted and adjustable treatment of particular areas of the brain, particular neurological functions, and/or states.
Accordingly, the inventor has conceived and reduced to practice, a system and method for targeted neurological treatment using brainwave entrainment therapy with passive treatment that allows for targeted treatment of particular areas of the brain, particular neurological functions, particular neurological states, and combinations of areas, functions, and states. The system and method receive gait parameters for an individual and compare those against a database of historical gait data to determine if an onset neurodegenerative condition is present, and applies a brainwave entrainment therapy responsive to the determination of the condition. The system and method receive a neurological assessment identifying areas of the brain or neurological functions to be treated, select one or more treatment modalities and frequencies, select a treatment regimen, and apply brainwave entrainment and brainwave entrainment therapy using the modalities, frequencies and regimen while the subject engages in dual-task activities selected to stimulate the areas of the brain, neurological functions, or neurological states to be treated, enhanced, or altered.
According to a preferred embodiment, a system for targeted neurological therapy is disclosed, comprising: a computing device comprising a memory, a processor, and a non-volatile data storage device; a neurological database stored on the non-volatile data storage device, the neurological database comprising information related to neurological conditions and the association of those neurological conditions with primary tasks, associative activities, brainwave entrainment therapies, or gait data, or any combination thereof; a stimulation transducer; and a software application, comprising a first plurality of programming instructions stored in the memory and operating on the processor, wherein the first plurality of programming instructions, when operating on the processor, causes the computing device to: receive a neurological assessment for an individual comprising a neurological condition of the individual; receive one or more gait measurements for an individual; compare the one or more gait measurements for the individual against the neurological conditions in the neurological database to identify a neurological condition of the individual; select a primary task from the neurological database associated with the neurological condition; select an associative activity from the neurological database associated with the neurological condition; select a brainwave entrainment therapy from the neurological database associated with the neurological condition, the therapy comprising a stimulation frequency; assign a dual task stimulation for the individual to perform, the dual task stimulation comprising the primary task and the associative activity; apply the brainwave entrainment therapy by operating the stimulation transducer at the stimulation frequency while the individual is engaged in the dual task stimulation.
According to another preferred embodiment, a method for targeted neurological therapy is disclosed, comprising the steps of: receiving a neurological assessment for an individual comprising a neurological condition of the individual; receiving one or more gait measurements for the individual; comparing the one or more gait measurements for the individual against the neurological conditions in the neurological database to identify a neurological condition of the individual; selecting a primary task from a neurological database associated with the neurological condition, the neurological database comprising information neurological functions, or states, or both, and their associations with primary tasks, or associative activities, or both; selecting an associative activity from a neurological database associated with the neurological condition; selecting a brainwave entrainment therapy from the neurological database associated with the neurological condition, the therapy comprising a stimulation frequency; assigning a dual task stimulation for the individual to perform, the dual task stimulation comprising the primary task and the associative activity; applying the brainwave entrainment therapy by operating the stimulation transducer at the stimulation frequency while the individual is engaged in the dual task stimulation.
According to an aspect of an embodiment, the primary task is physical exercise and further comprising the step of having the individual perform the physical exercise on an exercise machine.
According to an aspect of an embodiment, the stimulation transducer is a transducer configured to provide either visual, auditory, vibratory, or electrical stimulation.
According to an aspect of an embodiment, the brainwave entrainment therapy comprises operating the stimulation transducer to provide either visual, auditory, vibratory, or electrical stimulation at a stimulation frequency between 0.5 Hz and 100 Hz.
According to an aspect of an embodiment, the brainwave entrainment therapy is applied using a plurality of transducers wherein at least two transducers are of different modalities.
According to an aspect of an embodiment, the brainwave entrainment therapy is applied using a plurality of transducers wherein at least two transducers are of different scales.
According to an aspect of an embodiment, the brainwave entrainment therapy is applied using a plurality of transducers wherein at least two transducers are of different modalities and at least two transducers are of different scales.
According to an aspect of an embodiment, the brainwave entrainment therapy is applied using a plurality of transducers, wherein at least two transducers are operated at different stimulation frequencies.
According to an aspect of an embodiment, the brainwave entrainment therapy is used to induce synchronized gamma oscillations in at least one brain region of the individual to treat dementia in the individual.
The accompanying drawings illustrate several embodiments of the invention and, together with the description, serve to explain the principles of the invention according to the embodiments. It will be appreciated by one skilled in the art that the particular embodiments illustrated in the drawings are merely exemplary, and are not to be considered as limiting of the scope of the invention or the claims herein in any way.
The inventor has conceived, and reduced to practice, a system and method for targeted neurological treatment using brainwave entrainment therapy with passive treatment that allows for targeted treatment of particular areas of the brain, particular neurological functions, particular neurological states, and combinations of areas, functions, and states. The system and method receive gait parameters for an individual and compare those against a database of historical gait data to determine if an onset neurodegenerative condition is present, and applies a brainwave entrainment therapy responsive to the determination of the condition. The system and method receive a neurological assessment identifying areas of the brain or neurological functions to be treated, select one or more treatment modalities and frequencies, select a treatment regimen, and apply brainwave entrainment and brainwave entrainment therapy using the modalities, frequencies and regimen while the subject engages in dual-task activities selected to stimulate the areas of the brain, neurological functions, or neurological states to be treated, enhanced, or altered.
As lifespans have improved in the past few decades, particularly in more developed countries, the mean and median age of populations have increased. The greatest risk factor for neurodegenerative diseases is aging, so older persons are more likely to suffer from degenerative diseases and conditions affecting the nervous system such as amyotrophic lateral sclerosis, Parkinson's disease, Alzheimer's disease, fatal familial insomnia, Huntington's disease, Friedreich's ataxia, Lewy body disease, and spinal muscular atrophy. It has been estimated that some 20-40% of healthy people between 60 and 78 years old experience discernable decrements in cognitive performance in one or more areas including working, spatial, and episodic memory, and cognitive speed. Early stages of neurodegenerative diseases are difficult to detect, the causes of such diseases are not well understood, and treatments for such diseases are non-existent.
Without using one of the costly brain scan technologies, it remains difficult to detect, assess, and treat poor functioning of the nervous system, whether such poor functioning is due to injury to the brain, neurodegenerative disease, psychological or physical trauma, or changes in brain chemistry, diet, stress, substance abuse, or other factors. For certain neurological conditions, such as Chronic Traumatic Encephalopathy (CTE), none of the current brain scan technologies are able to reliably capture diagnostic data. Other neurological deficits and conditions can be evaluated or diagnosed using assessments using readily available equipment and observational analysis, such as the Cognitive Performance Test (CPT) and Timed Up and Go Test (TUG) but lack the sensitivity suitable for nuanced or early deficit detection. Each of these types of poor nervous system function can impact different parts of the brain and/or nervous system in different ways. Due to the complexity of interactions in the nervous system and the brain's ability to adapt its function in many areas, it remains difficult to detect poor functioning and to identify which neurological functions states and anatomical aspects and regions are impacted early enough to implement an effective treatment protocol.
However, recent research studies have demonstrated that physical activity, especially aerobic exercise, can improve neurogenesis and other neurological functions and states, whether related to physical brain and nervous system impairments or mental health/emotional issues. In addition, evolutionary biologists have hypothesized that early humans began their cognitive revolution when they ventured into the African savannah and started walking upright. In fact, more recent research studies on the cerebellum, an ancient part of the brain that coordinates the motor control, have discovered unexpected connections between the cerebellum and other parts of the brain. Specifically, according to a team of researchers from the University of Washington, only 20 percent of the cerebellum connections was dedicated to areas involved in physical motion, while 80 percent was connected to areas involved in functions and states such as abstract thinking, planning, emotion, memory and language. The cerebellum doesn't actually execute tasks like thinking, just as it doesn't directly control movement. Instead, it monitors and coordinates the brain areas that are doing the work and makes them perform better.
Therefore, simultaneous testing of primary physical tasks such as walking or running and the associative activities that include various mental, other physical activities as well as emotional experiences (commonly known as a dual task assessment), and the correlation of results therefrom can be used to evaluate specific neurological functional areas to create a profile of relative neurological functioning and see where deficiencies may be present. Therefore, changes in a person's walking gait while the person is engaged in other associative activities like solving a logic puzzle could be analyzed and compared against the normal or average dual-tasking costs of the same population group for relative functioning as well as anomalies. Such anomalies for the given brain functions and states or regions could be indicative of abnormal central nervous system functions. Further, the combination of the dual-tasked physical and associative activities can help identify the abnormally-performing neurological functions or even help isolate affected neurological regions. For example, a walking gait/logic puzzle dual-task activity may indicate normal functioning in a given individual, indicating that autonomous physical activity and cognition are not affected. However, in the same individual another dual task of walking and listening within a virtual reality (VR) environment may result in gait changes or a complete stop of the walk as the neurological functions required for these tasks are different from walking and logic. In this case, it may indicate that there may be injury to or degeneration of the auditory cortex of the temporal lobe, potentially informing further diagnostic procedures. As a result, a system combining numerous combinations of various dual-tasking activities, covering all neurological functions or regions, may be able to evaluate, detect, and treat neurological deficits and conditions even before they become noticeably symptomatic. For individuals for whom symptoms are already present, such a system can evaluate and track changes over time, and potentially slow down or reverse the progression of such deficits and conditions.
Using this same dual-tasking analysis, it is also possible to evaluate, detect, and treat neurological conditions and changes involving mental health and emotional issues. For example, elevated heart rate, elevated blood pressure, or chest pain during exercise that are higher than an individual's normal history for these indicators can indicate emotional stress. The addition of story-telling or emotional experiences through computer games and/or simulations (and especially when such experiences are virtual-reality experiences) can help to elicit emotional and physiological responses or lack thereof. For example, a veteran suffering from PTSD (Post-Traumatic Stress Disorder) could be trained inside such a dual-tasking VR environment so that s/he can gradually regain her/his agency by overcoming progressively challenging physical and emotional scenarios—reactivating her/his dorsolateral prefrontal cortex and lateral nucleus of thalamus with the help of these combined physical and emotional activities (likely using parallel but not war-based scenarios). As a result, the veteran could potentially extricate herself or himself from such traumatic experiences by developing her/his closure stories.
The integration of a primary physical task with an associative activity is also especially well-suited for the evaluation and conditioning of specific aspects of neurological functioning in individuals training for physical, mental, or combined forms of competition. After an initial array of primary physical challenges and associated tasks designed to evaluate specific neurological functioning areas to create a profile of relative functioning a more thorough understanding of the competitor's strengths and weaknesses in their specific mode of competition can be achieved. With the help of a conditioning recommendation algorithm, expert input, and competitor input a regimen of physical and associative tasks specifically suited to improve performance of that competitor and mode of competition can be administered at prescribed or chosen frequency. Digital challenges can further be customized for competition and competitor specificity as the conditioning recommendation algorithm analyzes the efficacy of conditioning regimens for users aiming to improve in similar neurological functions and states, the specific user's response to conditioning inputs over time, and expert recommendations for users with similar neurological functioning profiles and objectives.
Further, as the dual-tasking methodologies described above stimulate activity in certain portions of the brain corresponding to certain neurological functions and states, those same dual-tasking methodologies can be used to apply targeted brainwave entrainment to the brain. After a neurological assessment has been made (whether or not through dual-tasking analysis), a treatment regimen can be selected for treatment of certain areas of the brain and/or specific neurological functions in which dual-task activities are selected which activate (i.e., stimulate) those areas of the brain and/or neurological functions, and brainwave entrainment is applied while those areas of the brain and/or neurological functions and states are activated, thus concentrating the effect of the brainwave entrainment on the activated (i.e., stimulated) areas or neurological functions. The targeted brainwave entrainment therapy may be further enhanced by selecting multiple treatment modalities (e.g., light, sound, vibration, electrical stimulation) applied either simultaneously or sequentially, by varying the frequency or frequencies of brainwave entrainment (e.g., from about 0.5 Hz to about 100 Hz), and by varying the intensity and/or scale of the treatment (e.g., from subtle, localized vibrational or electrical stimulation to area-wide, intense stimulation such as high-intensity room lighting and sound).
Implementations of visual brainwave entrainment to date have been limited to passive visual stimulation using physical lights (typically light emitting diodes, or LEDs). There is no interactivity or active engagement with the visual stimulation transducers, which makes the process less effective and uninteresting. Further, the visual stimulation transducers, being physical objects, cannot be changed in terms of size or shape, cannot be modified in reaction to user feedback, and are limited in terms of colors available, are generally fixed in place, and additional lights cannot be added to the system without physically connecting (and likely programming) additional lights.
Virtual objects, on the other hand, have none of these limitations, and can be used as visual stimulation transducers while users are engaged with an on-screen display. Brainwave entrainment using virtual objects provides essentially unlimited variability in terms of stimulator sizes, shapes, colors, movements, rotations, etc., and allows for the use of multiple stimulators simultaneously, each with different characteristics. Any change to a virtual object that is perceptible to a user and can be applied at a repeating frequency may be used to apply brainwave entrainment.
Further, gamification changes the brainwave stimulation from passive receipt of light therapy to active engagement with the visual stimulation objects, wherein the user's brain is actively stimulated during the activity, enhancing the effectiveness of the stimulation. Further, as the user is actively engaged with the game, stimulation can be applied based on where the user's attention is focused. Attention-based stimulation provides opportunities for both direct stimulation (e.g., flashing an object at which the user is looking, playing sounds or providing haptic feedback associated with a game object or activity that is the object of the user's attention, etc.) and indirect stimulation (e.g., flashing an object in the user's periphery of vision, playing sounds or providing haptic feedback associated with the game, but not the object of the user's attention such as a background element, background music or sounds, etc.). For example, eye tracking technology can be used to determine where the user is looking on the screen at any given time, and objects at which the user is looking can be used to provide visual stimulation even if the user changes his or her attention to a different object on the screen. The user's attention to objects on the screen can be monitored over time to determine whether the user is remaining focused on the activity, or is getting tired and losing focus, and the determined level of user attention can be used to change the type, intensity, directness, and other characteristics of the stimulation. Other means of determining the user's attention may be used such as assuming that the user's attention is focused on an object with which the user has just interacted.
Brainwave entrainment using virtual objects may be further enhanced by using multiple objects, each capable of providing complementary types of stimulation, and/or by intentionally directing the user's attention to objects providing certain types of stimulation. For example, if the user is playing a first person shooter (FPS) game that involves shooting attacking aliens, the user's attention will naturally be focused on finding attacking aliens, aiming at them, and shooting them. As each alien will be the focus of the user's attention sequentially, the alien at which the user is currently looking may be flashed at appropriate frequencies and in appropriate colors to provide appropriate brainwave stimulation. Simultaneously, other objects on the screen (or even the background) may be selected to provide a complementary visual stimulation in the periphery of the user's vision. Further, brainwave entrainment using virtual objects may be enhanced by selecting multiple treatment modalities (e.g., light, sound, vibration, electrical stimulation) applied either simultaneously or sequentially, by varying the frequency or frequencies of brainwave entrainment (e.g., from about 0.5 Hz to about 100 Hz), and by varying the intensity and/or scale of the treatment (e.g., from subtle, localized vibrational or electrical stimulation to area-wide, intense stimulation such as high-intensity room lighting and sound).
Brainwaves are frequencies at which electrical impulses in the brain occur. Brainwave frequencies change based on the state of consciousness of the user (e.g., sleeping, awake, dreaming, concentrating, relaxed, contemplative, meditative, irritated, etc.). Generally speaking, brainwaves are divided into five categories with frequencies roughly in the following ranges.
Delta waves are brainwaves in the general frequency range of 0.1 Hz to 4 Hz. Delta waves occur during deep sleep, and indicate a low level of arousal. Theta waves are brainwaves in the general frequency range of 4 Hz to 8 Hz. Theta waves occur in a state between wakefulness and sleep, such as during daydreaming and meditation, and can indicate drowsiness, creativity, or imagination. Alpha waves are brainwaves in the general frequency range of 8 Hz to 12 Hz. Alpha waves occur during a waking state, but are associated with relaxation, problem solving, analysis, and decision-making. Beta waves are brainwaves in the general frequency range of 12 Hz to 30 Hz. Beta waves occur during alertness, concentration, and strenuous mental activities such as solving mathematical problems and planning for the future. Gamma waves are brainwaves in the general frequency range of 30 Hz to 44 Hz. Gamma waves are associated with high-level information processing. There is evidence of Lambda brainwaves in a range around 47 Hz to 70 Hz, and other brainwave entrainment frequencies may be useful up to around 100 Hz. These ranges are approximate, and there is some overlap between them.
There are many promising uses of brainwave entrainment. One promising use of brainwave entrainment is to treat and/or prevent epilepsy. There is some evidence that epileptic seizures occur when the brain falls into theta wave activity (approximately 4 Hz to 8 Hz) during normal waking consciousness. Normal waking consciousness is typically associated with beta wave brain activity (12 Hz to 38 Hz). Performing brainwave entrainment at beta wave frequencies on persons with epilepsy may help prevent them from falling into theta wave brain activity, thus preventing seizures.
Another possible use for brainwave entrainment is to reduce agitation by performing brainwave entrainment at alpha wave frequencies (approximately 8 Hz to 12 Hz). Alpha wave frequencies are those brain wave frequencies between theta wave activity (typically associated with dreaming) and beat wave activity (typically associated with concentration and learning). Alpha wave frequencies are associated with relaxation and calmness. Therefore, brainwave entrainment at alpha wave frequencies may help induce relaxation and calmness.
Many different wave forms and/or pulse widths may be used in delivering entrainment at the selected frequency or frequencies, regardless of the modality (light, sound, etc.) of the stimulation. Wave forms may include, but are not limited to, rectangular wave forms, sine wave forms, triangular wave forms, and sawtooth wave forms. Pulse widths or duty cycles at any given frequency may be varied across the entire range of the frequency period. For example, at a given frequency, the duty cycle of each period of the frequency can be varied from nearly 0% on-time/100% off-time to nearly 100% on-time/0% off-time. Thus, for a given frequency, the stimulator (e.g., light) can be on and off for an equal amount of time in each period (a 50% duty cycle), mostly on during each period (e.g., a 75% duty cycle), or mostly off during each period (e.g., a 25% duty cycle). In these cases, the frequency of the stimulation is the same, but the amount of on-time of the stimulation in each period of the frequency is different.
Different pulse widths or duty cycles may be useful, depending on the circumstances. For example, when engaged in a mental task that requires visual acuity, a very low or very high duty cycle may be used to flash a light stimulator at a pulse width that can be captured by the human eye, but is not consciously recognizable. The human eye can capture flashes of light as short as 1/200th of a second (equivalent to a frequency of 200 Hz), possibly shorter, but because of persistence of vision, cannot distinguish between repeated flashes of light at that frequency. Television and computer monitor frame refresh rates are typically 60 Hz or above, as this is a frequency at which persistence of vision makes it difficult to distinguish between frames. Thus, for example, the flicker of light stimulation at a frequency of 40 Hz and a 50% duty cycle would be easily perceivable by most human beings as each “on” pulse is 1/80th of a second long and separated by another “off” time of another 1/80th of a second. However, the flicker of light stimulation at the same frequency, but at a 80% duty cycle would likely not be consciously perceptible, as the “on” time of each period would last about 1/50th of a second and the “off” time of each period would last about 1/200th of a second. Thus, the “off” time of each period is within the limits of capture by the human eye (200 Hz), but would likely not be consciously perceptible because it is above the average frequency resolution (60 Hz) of the human eye, and the light would appear to the conscious mind to be on all the time.
In a similar manner, pulse widths or duty cycles may be adjusted to be perceptible to certain cells in the eye but not others. The human eye has two different types of light receptors: cones and rods. Cones are the dominant light receptors used under daylight conditions, and reception of light by cones is called photopic vision. Cones are able to distinguish colors, but are less sensitive to lower light intensity and the persistence of vision of cones is greater (meaning that the frequency of pulses that can be distinguished by cones is less than for rods). Rods are the dominant light receptors used at night and under low-light conditions, and reception of light by rods is called scotopic vision. Rods are not able to distinguish colors, but are more sensitive to lower light intensity and the persistence of vision of rods is less (meaning that the frequency of pulses that can be distinguished by rods is greater than for cones). Cones are greatly concentrated in the center of vision (where the person is directly looking) while rods are considerably more dominant in the periphery of vision. This difference in the type of light receptors in the eye can be used to advantage when selecting either a frequency of stimulation or a pulse width/duty cycle of that frequency. Again using the example above where visual acuity is required for a mental task, the pulse width or duty cycle of each period of a brainwave entrainment frequency of light can be selected to be perceptible to rods but not to cones, thus allowing the brainwave entrainment frequency of light to be perceived by the brain (through the rods in the periphery of vision which have a greater frequency resolution), but not consciously perceptible to the person (who is primarily focused on the light received by the cones (in the center of vision and with a lesser frequency resolution). One or more different inventions may be described in the present application. Further, for one or more of the inventions described herein, numerous alternative embodiments may be described; it should be appreciated that these are presented for illustrative purposes only and are not limiting of the inventions contained herein or the claims presented herein in any way. One or more of the inventions may be widely applicable to numerous embodiments, as may be readily apparent from the disclosure. In general, embodiments are described in sufficient detail to enable those skilled in the art to practice one or more of the inventions, and it should be appreciated that other embodiments may be utilized and that structural, logical, software, electrical and other changes may be made without departing from the scope of the particular inventions. Accordingly, one skilled in the art will recognize that one or more of the inventions may be practiced with various modifications and alterations. Particular features of one or more of the inventions described herein may be described with reference to one or more particular embodiments or figures that form a part of the present disclosure, and in which are shown, by way of illustration, specific embodiments of one or more of the inventions. It should be appreciated, however, that such features are not limited to usage in the one or more particular embodiments or figures with reference to which they are described. The present disclosure is neither a literal description of all embodiments of one or more of the inventions nor a listing of features of one or more of the inventions that must be present in all embodiments.
Headings of sections provided in this patent application and the title of this patent application are for convenience only, and are not to be taken as limiting the disclosure in any way.
Devices that are in communication with each other need not be in continuous communication with each other, unless expressly specified otherwise. In addition, devices that are in communication with each other may communicate directly or indirectly through one or more communication means or intermediaries, logical or physical.
A description of an embodiment with several components in communication with each other does not imply that all such components are required. To the contrary, a variety of optional components may be described to illustrate a wide variety of possible embodiments of one or more of the inventions and in order to more fully illustrate one or more aspects of the inventions. Similarly, although process steps, method steps, algorithms or the like may be described in a sequential order, such processes, methods and algorithms may generally be configured to work in alternate orders, unless specifically stated to the contrary. In other words, any sequence or order of steps that may be described in this patent application does not, in and of itself, indicate a requirement that the steps be performed in that order. The steps of described processes may be performed in any order practical. Further, some steps may be performed simultaneously despite being described or implied as occurring non-simultaneously (e.g., because one step is described after the other step). Moreover, the illustration of a process by its depiction in a drawing does not imply that the illustrated process is exclusive of other variations and modifications thereto, does not imply that the illustrated process or any of its steps are necessary to one or more of the invention(s), and does not imply that the illustrated process is preferred. Also, steps are generally described once per embodiment, but this does not mean they must occur once, or that they may only occur once each time a process, method, or algorithm is carried out or executed. Some steps may be omitted in some embodiments or some occurrences, or some steps may be executed more than once in a given embodiment or occurrence.
When a single device or article is described herein, it will be readily apparent that more than one device or article may be used in place of a single device or article. Similarly, where more than one device or article is described herein, it will be readily apparent that a single device or article may be used in place of the more than one device or article.
The functionality or the features of a device may be alternatively embodied by one or more other devices that are not explicitly described as having such functionality or features. Thus, other embodiments of one or more of the inventions need not include the device itself.
Techniques and mechanisms described or referenced herein will sometimes be described in singular form for clarity. However, it should be appreciated that particular embodiments may include multiple iterations of a technique or multiple instantiations of a mechanism unless noted otherwise. Process descriptions or blocks in figures should be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps in the process. Alternate implementations are included within the scope of embodiments of the present invention in which, for example, functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those having ordinary skill in the art.
The term “amplitude” means the difference between the high or low state of a signal or wave form and the base state of that signal or wave form in a full period (high/low or on/off cycle) of the frequency of the signal or wave form.
The phrase “associative activity” as used herein means a second task or activity to be engaged in by an individual under assessment. The associative activity will often, but not always, be a mental or cognitive task such as performing arithmetic or identifying objects on a display.
The term “biometrics” as used herein mean data that can be input, directly measured, or computed using directly measured data from a user. This data includes but is not limited to physical and virtual movement, physiological, biological, behavioral, navigational, cognitive, alertness and attention, emotional, and brainwave measurements and patterns.
The phrase “brainwave entrainment” means application of a stimulus with a frequency from about 0.5 Hz to about 100 Hz as a means of neurological therapy. The stimulus may be of any perceptible form such as, but not limited to, light, sound, vibration, or electrical stimulation. The stimulus need not be from the same source (e.g., two light sources each at 20 Hz could be synchronized to produce a 40 Hz stimulus) or from the same modality (e.g., a sound source at 15 Hz and a light source at 15 Hz could be synchronized to produce a 30 Hz stimulus).
The phrase “composite function score” as used herein means a indicative of a relative level of neurological functioning comprised of weighted input of combined movement, biometric, and performance data sources collected by a given embodiment of the system, input by the user or an expert, historical performance and life history data from various sources, etc.
The term “conditioning” as used herein means all aspects of the system that can be used for the improvement, training, treatment of or exposure to aspects of neurological functioning. This could be in the form of a prescribed regimen from an expert, recommendation algorithm, self-selected experiences, or combination thereof.
The phrase “dual task assessment” as used herein means measurement of baseline performance on a set of tasks and/or activities performed individually, as well as performance of the same set of tasks and/or activities simultaneously. While this is typically a single primary task (usually motor) combined with a single associative activity (typically a neurological activity such as cognitive task), it should be taken herein to include other combinations of multiplexed tasks in combinations including, but not limited to, combinations in excess of two tasks and combinations that target a single or multiple aspects of neurological functioning.
The phrase “dual task cost” as used herein means any method for quantifying the difference in performance of a dual task assessment between the set of tasks performed individually and the same set of tasks performed simultaneously. Typically includes a comparison of each task performed in isolation to the performance on each of those tasks when performed simultaneously, either for a pair or larger combination of tasks.
The phrase “dual task stimulation” as used herein means the assignment of a single primary task (usually motor) combined with a single associative activity (typically a neurological activity such as cognitive task) for a user to perform, whereby the combination of the task and activity either stimulates neurological activity in certain areas of the brain, or which is associated with certain neurological functions, or both. It is not necessary that the precise areas of the brain associated with the neurological function are known, only that certain tasks and activities are associated with that neurological function. This phrase should be taken herein to include other combinations of multiplexed tasks in combinations including, but not limited to, combinations in excess of two tasks and combinations that target a single or multiple aspects of neurological functioning.
The phrase “duty cycle” means the amount of time that a frequency signal is in the “high” or “on” state, expressed as a percentage, wherein each full period (complete high/low cycle) of the frequency signal represents 100%. Note that “duty cycle” and “pulse width” are two different means of expressing the same concept.
The term “expert” as used herein means an individual with specialization in an area via formal training, credentials, or advanced proficiency in a modality of interest to the user or with regard to neurological functioning. This includes but is not limited to physicians, psychiatrists, physical therapists, coaches, fitness trainers, high level athletes or competitors, and teachers.
The term “frequency” means a signal or wave form having a periodic repetition of high/low or on/off states. Examples of signals and wave forms that exhibit the characteristic of frequency include, but are not limited to, rectangular wave forms, sine wave forms, triangular wave forms, and sawtooth wave forms.
The terms “game” or “game application” mean any computer game, puzzle, display, animation, or simulation comprising virtual objects that can be interacted with in some manner by a person. These phrases include, but are not limited to, traditional two-dimensional games and puzzles, three-dimensional virtual reality (VR) applications and environments, enhanced reality and augmented reality applications and environments (comprising both real-world elements and virtual elements, such as virtual objects superimposed on a video feed of the real environment surrounding the user), and interactive applications that allow one to sense virtual objects through haptic feedback (whether or not associated with a visual display of the objects).
The term “gamification” as used herein means the application of brainwave entrainment using a game or a game application.
The phrase “neurological condition” means a persistent neurological state or neurological function, or combination of persistent neurological states, neurological functions, or both. A neurological condition can mean a neurodegenerative condition indicating impairment, but is not limited to that meaning.
The phrases “neurological functioning” and “neurological function” as used herein mean any and all aspects of neuroscience and neurology where input, output, processing, or combination thereof involve aspects of the nervous system. These include but are not limited to functional as well as anatomical aspects of cognitive, sensory, motor, emotional, and behavioral functions and experiences.
The phrase “neurological state” as used herein means a state of the neurological system including, but not limited to cognitive states, emotional states, and brain physiology status (electrical activity, bloodflow, etc).
The phrase “primary task” as used herein means a first task or activity to be engaged in by an individual under assessment. The primary task will often, but not always, be a physical task or exercise such as walking on a treadmill.
The phrase “pulse width” means the amount of time that a frequency signal is in the “high” or “on” state, expressed as a time period that is a portion of each full period (complete high/low cycle) of the frequency signal. Note that “duty cycle” and “pulse width” are two different means of expressing the same concept. The phrase “pulse width modulation” is often used to denote changing of the pulse width of a frequency signal.
The term “transducer” as used herein means a device that converts an electrical signal into variations in a physical quantity, such as sound, light, pressure, or electrical stimulation. A display is included in the definition of “transducer.”
The phrase “stimulation transducer” as used herein means a transducer used to stimulate one of the senses of a person or animal. Any portion of a display may be used as a stimulation transducer, non-limiting examples of which include virtual objects or backgrounds on the display.
The phrase “virtual object” means a computer-generated simulation of an object perceivable to a human being. Virtual objects include, but are not limited to, visible virtual objects such as two-dimensional and three-dimensional shapes shown on a display, non-visible virtual objects such as those that might be “felt” through haptic feedback (e.g., gloves equipped with haptic feedback equipment that provide resistance to the user's fingers around the contours of a virtual object in space), and any combination of the two (e.g., a visible virtual object displayed in a virtual reality environment through a VR headset which can also be “felt” by the user via haptic feedback). A virtual object does not have to be gamified and may be, for example, a virtual object displayed on a screen.
Conceptual Architecture
Exercise machine 100 may further comprise a rigid handlebar 103 affixed or integrally-formed on one end of exercise machine 100, for a user to hold onto while facing forward during use. Handlebar 103 may further comprise a stand or mount 104 for a user's smart device such as (for example) a smartphone or tablet computer, so they may safely support and stow the device during use while keeping it readily accessible for interaction (for example, to configure or interact with a software application they are using, or to select different applications, or to control media playback during use, or other various uses). Handlebar 103 may be used to provide a stable handle for a user to hold onto during use for safety or stability, as well as providing a rigid point for the user to “push off” during use as needed, for example to begin using a moving treadmill surface (described below in
As illustrated, the base 101 of exercise machine 100 may be formed with a mild, symmetrical curvature, to better approximate the natural range of movement of a user's body during use. Common exercise machines such as treadmills generally employ a flat surface, which can be uncomfortably during prolonged or vigorous use, and may cause complications with multi-directional movement or interaction while a user's view is obscured, as with a headset (described below in
For example, a user 301 on exercise machine 100 may be playing a virtual reality skiing game or rehab program wherein they are given audio and video output via a headset 302 to immerse them in a virtual ski resort. When user 301 is not skiing, they may be able to use manual controls 305a, 305b for such operations as selecting from an on-screen menu, or typing text input such as to input their name or to chat with other players using text. When they begin skiing within the game, user 301 may be instructed in proper ski posture or technique, and may then use their body to control various aspects of their virtual skiing, such as leaning to the side 320 to alter their course and avoid trees or other skiers, or jumping 310 to clear rocks or gaps. Movement of their head may be detected by a headset 302 and used to control their view independently of their body as it is tracked by tethers 304a-n, allowing user 301 to look around freely without interfering with their other controls. In this manner, the user's entire body may serve as an input control device for the game, allowing and encouraging them to use natural body movements to control their gameplay in an immersive manner while still retaining the option to use more familiar manual control means as needed. Alternatively, specific body functions such as hip twisting are used as user feedback for rehabilitating programs, including rehab games.
Utilizing an exercise machine 100 in this manner allows for a variety of novel forms of user interaction within virtual reality or mixed reality applications. For example, a user's body movement during exercise may be tracked in three dimensions and along or around various axes to record movement with six degrees of freedom (6DOF) comprising both translation along, and rotation about, each of three spatial axes. This may be used with torso tracking as described above (referring to
Various input devices may be connected to composition server 801 interchangeably as desired for a particular arrangement or use case, for example a user may wish to use a controller 804 in each hand and a headset 803, but omit the use of fitness devices 805 altogether. During operation, composition server 801 may identify connected devices and load any stored configuration corresponding to a particular device or device type, for example using preconfigured parameters for use as a default configuration for a new controller, or using historical configuration for a headset based on previous configuration or use. For example, a user may be prompted (or may volunteer) to provide configuration data for a particular device, such as by selecting from a list of options (for example, “choose which type of device this is”, or “where are you wearing/holding this device”, or other multiple-choice type selection), or composition server 801 may employ machine learning to automatically determine or update device configuration as needed. For example, during use, input values may be received that are determined to be “out of bounds”, for example an erroneous sensor reading that might indicate that a user has dramatically shifted position in a way that should be impossible (for example, an erroneous reading that appears to indicate the user has moved across the room and back again within a fraction of a second, or has fallen through the floor, or other data anomalies). These data values may be discarded, and configuration updated to reduce the frequency of such errors in the future, increasing the reliability of input data through use.
Composition server 801 may receive a wide variety of input data from various connected devices, and by comparing against configuration data may discard undesirable or erroneous readings as well as analyze received input data to determine more complex or fine-grained measurements. For example, combining input from motion-sensing controllers 804 with a motion-sensing headset 803 may reveal information about how a user is moving their arms relative to their head or face, such as covering their face to shield against a bright light or an attack (within a game, for example), which might otherwise be impossible to determine with any reliability using only the controllers themselves (as it may be observed that a user is raising their hands easily enough, but there is no reference for the position or movement of their head). These derived input values may then be combined into a single composite input data stream for use by various software applications, such as augmented reality or mixed or virtual reality productivity applications (for example, applications that assist a user in performing manual tasks by presenting virtual information overlays onto their field of vision, or by playing audio directions to instruct them while observing their behavior through input devices, or other such applications), or mixed or virtual reality applications or games, such as simulation games that translate a user's movement or position into in-game interaction, for example by moving a user's in-game character or avatar based on their physical movements as received from input devices. In some arrangements, composition server 801 may operate such software applications in a standalone manner, functioning as a computer or gaming console as needed. In other arrangements, composition server 801 may provide the composite data for use by an external computer 810, such as a connected gaming console, mixed or virtual reality device, personal computer, or a server operating via a network in the cloud (such as for online gaming arrangements, for example). In this manner, the composite data functions of the embodiment may be utilized with existing hardware if desired, or may be provided in a standalone package such as for demonstrations or public use, or for convenient setup using a single device to provide the full interaction experience (in a manner similar to a household gaming console, wherein all the functions of computer components may be prepackaged and setup to minimize difficulty for a new user).
It should be appreciated that while reference is made to virtual reality applications, a wide variety of use cases may be possible according to the embodiment. For example, torso tracking may be used for fitness and health applications, to monitor a user's posture or gait while walking, without the use of additional virtual reality equipment or software. In some arrangements, some or all interaction between a user and a software application may be nonvisual, and in some arrangements no display device may be present. In such an arrangement, a user may interact with software entirely using feedback and movement of a worn harness 420 or tethers 304a-n, using resistance or software-guided actuation of tethers 304a-n (as described below, with reference to
It should be further appreciated that while reference is made to a treadmill-type exercise machine 100, such an exercise machine is exemplary and any of a number of exercise machines may be utilized according to the aspects disclosed herein, for example including (but not limited to) a treadmill, a stationary bicycle, an elliptical machine, a rowing machine, or even non-electronic exercise equipment such as a pull-up bar or weight machine. Traditional exercise equipment may be outfitted with additional components to facilitate virtual reality or mixed reality interaction according to the aspects disclosed herein, for example by affixing a plurality of tethers 304a-n to a weight machine so that a user's movement during exercise may be used as interaction as described below (with reference to
In this example, there are seven groups of composite functioning scores, each representing either a physical ability, a mental ability, or a combined ability, and all of which together represent a picture of an individual's nervous system function. The memory 2501 and cognition 2502 composite functioning score groups represent purely mental activities, and present a picture of the individual's ability to think clearly. The speech 2503, auditory 2504, and vision 2505 composite functioning score groups represent combined physical/mental activities, as each represents some physical/mental interaction on the part of the individual. For example, speech requires the individual not only to mentally generate words and phrases on a mental level, but also to produce those words and phrases physically using the mouth and vocal cords. It is quite possible, for example, that the individual is able to think of the words, but not produce them, which represents one type of neurological condition. The speech 2503 composite functioning score group represents that combined ability, and the auditory 2504 and vision 2505 composite functioning score groups represent a similar combined ability. The motor skills 2506 composite functioning score group represents a mostly-physical ability to move, balance, touch, hold objects, or engage in other non-cognitive activities (recognizing, of course, that the nervous system controls those movements, but is not engaged in higher-level thinking). The emotional biomarker 2507 group represents the individual's emotional responses to certain stimuli during testing, as would be indicated by lack of empathetic responses to virtual reality characters in a story, responses indicating sadness or depression, etc.
From the data obtained from other components of the system, a profile of an individual's functional ability may be created and displayed on the composite functioning score spatial map. For example, a baseline profile 2508 may be established for an individual during the initial use or uses of the system (e.g., pre-treatment evaluation(s)), showing a certain level of ability for certain composite functioning scores. In the baseline profile 2508 example, all composite functioning scores indicate significant impairment relative to the population average 2511, but the composite functioning scores for cognition 2502 and auditory 2504 ability are relatively stronger than the composite functioning scores for memory 2501, speech 2503, vision 2505, and motor skills 2506, and the emotional biomarker group 2507 indicates substantial impairment relative to the population average 2511. Importantly, changes in the profile can show improvements or regressions in functionality, and changes over time in the profile can be tracked to show trends in improvement or regression. For example, a later profile 2509 for the same individual shows improvement in all biomarker groups, with substantial improvement in the cognition 2502, auditory 2504, motor skill 2506 biomarker groups, and dramatic improvement in the emotion 2507 composite functioning score groups, relative to the baseline profile 2508. The biomarker group for emotion 2507 in the later profile 2509 shows performance matching or nearly matching that of the population average 2511.
The physical activity data capture device 2710 may be any type of device that captures data regarding the physical movements and activity of a user. In some embodiments, the physical activity data capture device 2710 may be a stand-alone device not associated with the activity being performed (e.g. a camera, ultrasonic distance sensor, heat sensor, pedometer, or other device not integrated into exercise equipment). In other embodiments, the physical activity data capture device 2710 may be exercise equipment or peripherals that captures motion and activity information of a user engaged in physical activity while using the device. For example, the physical activity data capture device 2710 may be in the form of exercise equipment such as stand-on or ride-on exercise machines like treadmills, stair stepping machines, stationary bicycles, rowing machines, and weight-lifting or resistance devices, or may be other equipment wherein the user stands separately from the equipment and pulls or pushes on ropes, chains, resistance bands, bars, and levers. The physical activity data capture device 2710 may be in the form of computer peripherals (e.g., game controllers, virtual reality headsets, etc.) that capture data while the user is performing physical movements related to a game or virtual reality environment, or exercise equipment that engage the user in physical activity, such as barbells, free weights, etc., which are configured to provide location and/or motion information such an integrated motion sensors or external cameras configured to detect the peripheral. The physical activity data capture device 2710 may be in the form of exercise equipment or peripherals and may be referred to as an exercise device. Sensors in the physical activity data capture device 2710 may be either analog 2711 or digital 2712. Non-limiting examples of analog sensors 2711 are motor voltages and currents, resistors, potentiometers, thermistors, light sensors, and other devices that produce an analog voltages or currents. Most digital sensors are analog sensors 2711 with integrated analog-to-digital converters which output a digital signal, although some sensors are digital in the sense that they measure only discrete steps (e.g., an on/off switch). In most cases, signals from analog sensors 2711 will be converted to digital signals using an analog to digital converter 2701. For signals from digital sensors 2712, conversion is not necessary. In some cases, signals may need to be calibrated by a sensor calibrator, which corrects for sensor drift, out of range errors, etc., by comparing signals to known good values or to other devices.
The software application 2720 is any software designed to assign physical tasks and associative activities, to engage the user in the physical tasks and associative activities, and track and store data from physical tasks and responses to associative activities. The software application 2720 may have, or may use or access, a number of different software components such as a virtual reality game or environment generator 2721, an associative activity manager 2722 which designs, selects, and/or implements testing protocols based on the user's profile. Many different configurations of the software are possible. The software application 2720 may be configured to present tasks to the user independent of inputs from the physical activity data capture device 2710, such as performing playing games, performing math computations, remembering where certain symbols are located, visually following an object on a screen, or reading and speaking a given text. Alternatively, the software application 2720 may be configured to engage the user in mental or combined activities that correspond in some way to the inputs from the physical activity data capture device 2710. For example, the user might be running on a treadmill, and the speed of the treadmill might be used as an input to a virtual reality environment which shows the user virtually running at a rate corresponding to the rate of the real world treadmill speed. The software application 2720 is configured to record data regarding, or evaluate and assign scores or values to, the user's responses and reactions to the tasks presented by the software application 2720. For example, if the user is assigned the task of performing a mathematical calculation, the correctness of the user's response may be evaluated, scored, and recorded as data. As another example, the user may be presented with the task of speeding up or slowing down a running motion in response to a visual cue, and the speed of the user's reaction may be recorded as data. In such cases, a data integrator 2730 may be used to integrate the data from the physical activity data capture device 2710 with the data from the software application 2720. In some embodiments, the data from the physical activity data capture device 2710 may be used to change the operation of the software application 2720, and vice versa (i.e., the software application 2720 may also be used change the operation of the exercise equipment, for example, providing additional resistance or speeding up the operation of a treadmill). In some embodiments, the data integrator may not be a separate component, and its functionality may be incorporated into other components, such as the software application 2720.
In some embodiments, the software application 2720, another machine-learning based software application such as a task assignment software application (not shown), may be configured to assign physical tasks to the user to be performed in conjunction with the associative activities assigned. Rather than simply performing continuously performing physical activity and recording the impact on the physical activity of performance of the associative activities, the user may be assigned discrete physical tasks to perform while a mental activity is being performed. For example, the user may be assigned the physical task of pointing to a fixed spot on a display screen while reading aloud a text, and the steadiness of the user's pointing may be measured before, during, and after the reading, thus indicating an impact on the user's physical activity of the mental effort. Such dual-task testing may allow for more precise measurement and evaluation of relative functioning as different combinations of physical and associative activities are evaluated together. In some embodiments, the associative activity may be a second physical task or activity assigned to be performed simultaneously with a primary physical task or activity. Note that the terms “task” and “activity” as used herein are interchangeable, although the phrases “physical task” and “associative activity” are often used for purposes of clarity and convenience.
Many different aspects of movement and performance may be analyzed by the movement and performance profile analyzer 2900 through one or more of its many component analyzers 2901a-n such as the gait analyzer, balance analyzer, gross motor analyzer, fine motor analyzer, depth perception analyzer, executive function analyzer, visual function analyzer, auditory function analyzer, memory function analyzer, emotional response analyzer, etc. For example, the gait analyzer of the component analyzers 2901 ingests sensor data related to an individual's ambulatory movements (walking or running) while performing the given associative activity, and calculates a step frequency, step symmetry, weight distribution, and other metrics related to an individual's gait. These calculations are then compared to expected calculations for an individual without performing the given the associative activity. If an individual exhibits a limp while performing the given associative activity (e.g., popping virtual balloons), the step frequency, step symmetry, and weight distribution will all be skewed with the impaired side showing a shorter step duration and less weight applied. The expected calculations may be determined from the full range of sensor values, per-exercise calibrations, statistical data, or other means appropriate to the specific application. The balance analyzer of the component analyzer 2901 performs a similar function with respect to an individual's balance. Wobbling, hesitation, or partial falls and recoveries while performing a range of associative activities can be calculated from the data. The historical movement and performance comparator 2902 retrieves historical data for the individual (if such exists) from a user movement and performance historical data database 2910, and compares the current movement and performance data with historical data to determine trends in the movements and performances over time. The statistical movement and performance comparator 2903 retrieves statistical range of motion and performance data for populations similar to the individual from a demographic data database 2920, and compares movements and performances of the individual to similar individuals by sex, age, height, weight, health conditions, etc. The movement and performance profile generator 2905 takes the data from the prior components, and generates and stores a movement and performance profile for the individual which integrates these analyses into a comprehensive picture of the individual's movement and performance functionality.
The device of this embodiment is designed such that is can be mounted on an exercise machine (that may or may not be otherwise equipped for dual task stimulation purposes), whereby it can be used to provide dual task stimulation. The combination of the dual task stimulation with brainwave entrainment allows for stimulation of certain portions of the brain associated with certain neurological functions, and allows for targeted brainwave entrainment by enhancing and concentrating the effect of the brainwave entrainment on the stimulated areas of the brain. As one example, a person with memory loss may be provided dual task stimulation such as walking on a treadmill (physical task) while playing a memory-based card matching or tile matching game (associated mental activity). While the person is engaged in the dual task stimulation, brainwave entrainment is applied via the lights 3302 (or via the screen in some applications) and/or the speakers 3303. As the neurological functions in the brain associated with memory are being stimulated), the neurons in the brain associated with those functions are in an already-stimulated state, and the brainwave entrainment's stimulation of oscillations in the electrochemical state of neurons in those already-stimulated areas will have a more pronounced effect than on other areas of the brain. In this way, the already-stimulated areas of the brain will experience a greater reduction in degenerative conditions (i.e., reductions in amyloid plaques and tau phosphorylation) and greater increases in synaptic density.
The stationary recumbent bicycle 3410 comprises a base 3415, a chair back 3411, a seat 3412, arm rests 3414, a plurality of supports 3413 connecting the chair back 3411 and seat 3412 to the base 3415, a resistance mechanism 3416 allowing for resistance to a pedaling motion of the user, and a pedal system 3417 for the user to pedal in a cycling motion. The stationary recumbent bicycle 3410 thus provides the means for the user to engage in a physical task for dual task stimulation (and/or dual task assessment).
The localized and/or individual stimulation transducers 3420 of this embodiment are a headband 3421 with vibratory stimulation and hand grips 3422 which provide electrical stimulation. These provide localized stimulation which can only be perceived by the user, which also makes them individual stimulation transducers (as opposed to the other scales, which can be perceived by others, and which could be used to provide brainwave entrainment to more than one person using the same transducer(s)). The headband may produce simple vibratory (i.e., tactile) stimulation to the head, or may be configured to produce vibrations at certain locations on the head and at certain intensities so as to be perceptible by the middle and inner ear, which causes the stimulation to be both tactile and auditory in nature. This double stimulation (tactile and auditory) amplifies the effect of a single type of transducer, increasing the efficiency of brainwave entrainment from applications of that transducer.
The small area stimulation transducers 3430 of this embodiment are devices attached to the exercise machine 3410, but not directly attached to or in contact with the user. For example, a console comprising a screen 3432, light bars 3433, and speakers 3434 similar to that of the device of
The large area stimulation transducers 3440 of this embodiment are devices that can be used over a large area and potentially a large number of persons such as a room or auditorium. In this embodiment, The large area stimulation transducers are large LED light bars 3442 and large speakers 3443 attached to a wall 3441 of the room in which the stimulation will be applied. The large area stimulators such as the LED light bars 3442 and large speakers 3443 on the wall 3441 can be used to fully immerse the user in intense brainwave entrainment with large areas of bright light and loud, booming sounds. The immersion and intensity can be enhanced, for example, by surrounding the user with large area stimulators on walls on all sides (and possibly ceilings and floors) covering the user's entire visual area, so that the user receives visual stimulation no matter in which direction the user looks an auditory stimulation no matter where the user is located. Higher immersion and intensity may provide greater beneficial effects from brainwave entrainment.
It is important to note that any type of transducer can be applied at any scale. For example, light stimulation can be configured such that it is seen only by one person (e.g., in glasses or goggles), or is seen by a small number of persons (e.g., a single LED light bar), or is seen by many people (e.g. room lights, stadium lights, etc.). Further, the intensity of stimulation can be largely varied separately from the scale of stimulation. However, depending on the circumstances and application, brainwave entrainment at certain scales and/or intensities may be more useful or effective than at others.
The different scales of stimulation transducers allow for a choice of the level of immersion the user experiences with respect to the brainwave entrainment, and to some degree, the level of intensity of the brainwave entrainment. Immersion is the quality of being surrounded by or absorbed in an experience. Intensity is the magnitude of the experience. They are separate qualities (e.g., a localized electric stimulation can be intense, but not immersive), but there can be an increase in intensity with an increase in scale (for example, if light stimulation comes from all directions, it will tend to be both more immersive and more intense, although the intensity of the lights can be reduced to offset this tendency). For example, a localized, subtle electrical stimulation through electrically-conducting hand grips 3422 provides minimal immersion of the user in the brainwave entrainment. This may be useful, for example, where intense concentration on the dual task stimulation is necessary. Small area stimulation transducers such as the LED light bars 3433 on the screen console are useful for mid-level immersion and mid-level intensity of brainwave entrainment. The LED light bars 3433 cover a small, but significant, area of the user's view, and the speakers 3434 are large enough to provide a substantial auditory stimulus. The large area stimulators such as the LED light bars 3442 and large speakers 3443 on the wall 3441 can be used to fully immerse the user in intense brainwave entrainment with large areas of bright light and loud, booming sounds. The immersion and intensity can be enhanced, for example, by surrounding the user with large area stimulators on walls on all sides (and possibly ceilings and floors) covering the user's entire visual area, so that the user receives visual stimulation no matter in which direction the user looks an auditory stimulation no matter where the user is located. Higher immersion and intensity may provide greater beneficial effects from brainwave entrainment.
Further, it is important to note that the modalities (types of stimulation), scales, and intensities allows for tremendous flexibility in selecting suitable therapies regimens for different situations. For high-immersion scenarios (e.g., maximum brainwave entrainment with fewer cognitive demands such as listening to music), multiple modalities, scales, and intensities may be used at the same time. For example, while a user is listening to classical music, localized electrical stimulation may be applied to the wrist, small area visual stimulation may be applied using a single LED light bar, and large area tactile stimulation may be applied using subwoofers which produce sounds (infrasounds) which are inaudible to the human ear but can be perceived through the sense of touch (e.g., as oscillating pressure on the torso).
Further, modalities can be chosen to either amplify certain tasks or activities or to supplement them. For amplification, treatment modalities are chosen to include those corresponding to a given task or activity in dual task stimulation. As an example, if a dual task stimulation activity assigned to a user is listening to music, a 40 Hz auditory signal can be used as gamma entrainment therapy. As the user is already focused on listening, the user is focusing more intensely on auditory activities (and the brain areas and functions associated with auditory activities are stimulated), enhancing the effect of the auditory gamma entrainment modality. For supplementation, treatment modalities are chosen to exclude those corresponding to a given task or activity in dual task stimulation. As an example, if a dual task stimulation activity assigned to a user is listening to specific songbirds for the purpose of identifying or counting them, adding a 40 Hz auditory signal may interfere with the listening process, thus either disrupting the dual task stimulation or causing the gamma entrainment to be ineffective. In such circumstances, a non-conflicting modality may be chosen such as light therapy or vibratory therapy.
A treatment regimen is then created by selecting appropriate dual task stimulation to stimulate the areas of the brain to be treated 3503, selecting amplification or supplementation 3504 as appropriate for the dual task stimulation, choosing appropriate treatment modalities (e.g., light therapy, sound therapy, vibrational therapy, electrical therapy, or combinations of such modalities) either for amplification 3505 (treatments including those corresponding to the tasks, activities, or neurological function) or for supplementation 3506 (treatments including those corresponding to the tasks, activities, or neurological function), and selecting a stimulation scale and intensity 3507 for each modality appropriate for the treatment goals. In this example, three modalities are shown with different scales and intensities, localized electrical stimulation at a light intensity 3507a, large area visual stimulation at a moderate intensity 3507b, and small area auditory stimulation at a moderately intense intensity 3507c. Brainwave entrainment is then applied using the chosen regimen, providing targeted treatment of particular areas of the brain and/or particular neurological functions via stimulation of those areas or functions using dual task stimulation.
The dual task stimulation manager 3601 is responsible for receiving neurological assessments, each comprising a neurological condition to be treated, and creating therapy regimens to treat the neurological condition. The neurological assessment may be in any number of different forms. One possible form is a report of a physician or other health professional identifying a deficiency in neurological function such as a cognitive or motor-physical decline associated with neurological disease or degradation. Another possible form is a report from a coach or other sports professional recommending an improvement in some area of training or physical performance. Another possible form is the results of a dual task assessment. It is important to note that a neurological assessment does not necessarily mean an assessment of a deficiency. It may note normal function, but indicate a neurological condition for improvement. The dual task manager 3601 creates a therapy regimen based on the neurological condition by consulting the neurological database 3602 and the brainwave entrainment database.
The neurological database 3602 is a database containing information that associates neurological conditions with primary tasks and associative activities (i.e., dual tasking tasks and their associated activities). This database may be developed from pre-existing information or may be built up over time from dual task assessments. The brainwave entrainment database 3603 is a database of information about brainwave entrainment therapies (i.e., modalities, immersion, intensity, and stimulation frequencies) tending to be more or less effective under certain conditions and in certain situations, including conditions and situations associated with dual task stimulation. The brainwave entrainment database may likewise be developed from pre-existing information or may be built up over time from dual task assessments. Importantly, both the neurological database 3602 and the brainwave entrainment database may store neurological assessment data for particular individuals over time, and use the results of the neurological assessments of each such individual to create therapy regimens for that individual. This provides concrete information about the effectiveness of created therapy regimens on a given individual, and allows for future therapy regimens to be adjusted to meet the needs of that individual.
Once a therapy regimen is created, the dual task stimulation manager assigns dual task stimulation to the individual undergoing treatment comprising a primary task and an associative task. In this case the primary task involves exercise on an exercise machine 3604, and the associative task involves solving puzzles on a display 3605. The exercise machine provides feedback to the dual task stimulation manager 3601 as to whether the primary task is being performed, and the display provides feedback as to whether the associative activity is being performed. While the dual task stimulation is being performed, the dual task stimulation manager sends signals to the appropriate transducers 3605-3607 to operate them according to the appropriate stimulation frequency.
The dual task stimulation manager 3901 is responsible for receiving neurological assessments, each comprising a neurological condition to be treated, and creating therapy regimens to treat the neurological condition. The neurological assessment may be in any number of different forms. One possible form is a report of a physician or other health professional identifying a deficiency in neurological function such as a cognitive or motor-physical decline associated with neurological disease or degradation. Another possible form is a report from a coach or other sports professional recommending an improvement in some area of training or physical performance. Another possible form is the results of a dual task assessment. It is important to note that a neurological assessment does not necessarily mean an assessment of a deficiency. It may note normal function, but indicate a neurological condition for improvement. The dual task manager 3901 creates a therapy regimen based on the neurological condition by consulting the neurological database 3902 and the brainwave entrainment database.
Gait impairment is common in neurodegenerative disorders and conditions. Specifically, gait variability, the stride-to-stride fluctuations in distance and time, has been associated with neurodegeneration and cognitive impairment. Some examples of neurodegenerative disorders that may be associated with an impaired gait include Parkinson disease, mild cognitive impairment, Alzheimer's disease, dementia, Lewy body dementia, and frontotemporal dementia. The systems and methods disclosed within this specification may be well suited for providing gait detection and comparison detected gaits against a database of historical gait data related to the gaits of individuals who are known to be afflicted by a neurodegenerative conditions. Historical gait information may be stored in neurological function database 3902 and received, retrieved, or otherwise obtained by dual task stimulation manager 3901 in order to determine if an individual demonstrates signs of an onset degenerative condition. Historical gait information may include gait patterns, characteristics, or measurements, or each of these, and their associated degenerative condition. Furthermore, passive treatments associated with a degenerative condition may be stored in neurological function database 3902.
There is a wealth of supporting evidence that suggests that stimulating regions of the brain of individuals who have a neurodegenerative condition with a stimulus operating at a frequency between 30 Hz and 50 Hz (preferably 40 Hz) can induce gamma oscillations in the brain which can lead to a reduction of the effects of neurodegenerative disorders. System 3900 may be configured to assign a passive treatment to provide a stimulus operating at or near the 40 Hz frequency based on the comparison of received gait parameters and the associated neurodegenerative condition, if any. The treatment is considered passive because unlike the primary task (e.g., riding an exercise bike) and associative activity task (e.g., solving a puzzle), which both involve active participation from an individual, the individual can undergo the passive treatment without active participation. For example, passive treatment may comprise activating an transducer (e.g., light source, such as light emitting diode) at a frequency between 30 Hz and 50 Hz. As another example, the transducer may be a speaker which outputs a sound within a given frequency range. As yet another example, passive treatment may be implemented on a display 3905 which utilizes both a light source and speakers to emit both light and sound signals, respectively, simultaneously, or with each stimulus occurring individually. In this way, system 3900 can provide passive treatment separate from, or in conjunction with dual task entrainment therapy.
According to some embodiments, dual task stimulation manager 3901 may further comprise a gait comparator 3909 and a signal generator 3910. Gait comparator 3909 may receive, retrieve, or otherwise obtain gait parameter data related to an individual and compare the gait parameters with historical gait data stored in neurological function database 3902. Gait parameters may calculated based on an individual's interaction with an exercise machine 3903 while wearing a torso tracking and feedback belt as described above (referring to
According to some embodiments, signal generator 3910 may allow for configuration of a passive treatment by generating a signal based on a plurality of treatment parameters. In some embodiments, signal generator 3910 may receive, retrieve, or otherwise obtain information about brainwave entrainment therapies and passive treatments and then configure signal generator 3910 to generate a signal based on the passive treatment information. In some embodiments, signal generator 3910 may be manually configured, such as, for example, by a doctor, trainer, or physical therapist, in real-time in order to adjust the passive treatment to the needs of the individual undergoing the treatment and/or therapy regimen. Signal parameters that may be configured include, but is not limited to, amplitude, frequency, phase, magnitude, duration, shape, polarization, period, modulation, level, and irradiance. Furthermore, signal components related to light signals (e.g., blinking light) may include, but are not limited to, wavelength range, color temperature, color, luminous intensity, and irradiance. For example, producing a light signal with a frequency of 40 Hz and a blue color may be used as passive treatment for dementia or other neurodegenerative conditions. Signal generator 3910 may receive a signal configuration and send the signal to a plurality of emitters such as transducers 3906-3908 and/or display 3905.
The neurological database 3902 is a database containing information that associates neurological conditions with primary tasks and associative activities (i.e., dual tasking tasks and their associated activities). This database may be developed from pre-existing information or may be built up over time from dual task assessments. The brainwave entrainment database 3903 is a database of information about brainwave entrainment therapies and passive treatments (i.e., modalities, immersion, intensity, and stimulation frequencies) tending to be more or less effective under certain conditions and in certain situations, including conditions and situations associated with dual task stimulation. The brainwave entrainment database may likewise be developed from pre-existing information or may be built up over time from dual task assessments. Importantly, both the neurological database 3902 and the brainwave entrainment database 3903 may store neurological assessment data for particular individuals over time, and use the results of the neurological assessments of each such individual to create therapy regimens for that individual. This provides concrete information about the effectiveness of created therapy regimens on a given individual, and allows for future therapy regimens to be adjusted to meet the needs of that individual. For example, an individual's gait parameters may be tracked over time to monitor and assess the efficacy of the therapy regimens and passive treatments.
Once a therapy regimen is created, the dual task stimulation manager assigns dual task stimulation, including passive treatment, to the individual undergoing treatment comprising a primary task and an associative task. In this case the primary task involves exercise on an exercise machine 3904, and the associative task involves solving puzzles on a display 3905. The exercise machine provides feedback to the dual task stimulation manager 3901 as to whether the primary task is being performed, and the display provides feedback as to whether the associative activity is being performed. While the dual task stimulation is being performed, the dual task stimulation manager sends signals to the appropriate transducers 3906-3908 to operate them according to the appropriate stimulation frequency
Exercise machine 100 may be designed without a control interface commonly utilized by exercise machines in the art, instead being configured with any of a variety of wireless network interfaces such as Wi-Fi or BLUETOOTH™ for connection to a user's smart device, such as a smartphone or tablet computer. When connected, a user may use a software application on their device to configure or direct the operation of exercise machine 100, for example by manually configuring a variety of operation settings such as speed or resistance, or by interacting with a software application that automatically directs the operation of exercise machine 100 without exposing the particular details of operation to a user. Additionally, communication may be bi-directional, with a smart device directing the operation of exercise machine 100 and with exercise machine 100 providing input to a smart device based at least in part on a user's activity or interaction. For example, a user may interact with a game on their smart device, which directs the operation of exercise machine 100 during play as a form of interaction with, and feedback to, the user. For example, in a racing game, exercise machine 100 may alter the resistance of moving surfaces 203a-b as a user's speed changes within the game. In another example, a user may be moving about on moving surfaces 203a-b while playing a simulation or roleplaying game, and their movement may be provided to the connected smart device for use in controlling an in-game character's movement. Another example may be two-way interactive media control, wherein a user may select media such as music for listening on their smart device, and then while using exercise machine 100 their level of exertion (for example, the speed at which they run or jog) may be used to provide input to their smart device for controlling the playback of media. For example, if the user slows down music may be played slowly, distorting the audio unless the user increases their pace. In this manner, exercise machine 100 may be used interchangeably as a control and feedback device or both simultaneously, providing an immersive environment for a wide variety of software applications such as virtual reality, video games, fitness and health applications, or interactive media consumption.
As a user moves, his or her body naturally shifts position and orientation. These shifts may be detected and measured via tethers 410a-n, for example by detecting patterns of tension or strain on tethers 410a-n to indicate body orientation, or by measuring small changes in strain on tethers 410a-n to determine more precise movements such as body posture while a user is speaking, or specific characteristics of a user's stride or gait. Additionally, through varying the quantity and arrangement of tethers 410a-n, more precise or specialized forms of movement may be detected and measured (such as, for example, using a specific arrangement of multiple tethers connected to a particular area of a user's body to detect extremely small movements for medical diagnosis or fitness coaching). This data may be used as interaction with software applications, such as for virtual reality applications as input for a user to control a character in a game. In such an arrangement, when a user moves, this movement may be translated to an in-game character or avatar to convey a more natural sense of interaction and presence. For example, in a multiplayer roleplaying game, this may be used to facilitate nonverbal communication and recognition between players, as their distinct mannerisms and gestures may be conveyed in the game through detection of natural torso position and movement. In fitness or health applications, this data may be used to track and monitor a user's posture or ergonomic qualities, or to assist in coaching them for specific fitness activities such as holding a pose for yoga, stretching, or proper running form during use with a treadmill. In medical applications, this data may be used to assist in diagnosing injuries or deficiencies that may require attention, such as by detecting anomalies in movement or physiological adaptations to an unrecognized injury (such as when a user subconsciously shifts their weight off an injured foot or knee, without consciously realizing an issue is present).
Through various arrangements of tethers 410a-n and tether sensors (as described below, referring to
Additionally, through the use of various hardware construction it becomes possible to utilize both “passive” tethers that merely measure movement or strain, as well as “active” tethers that may apply resistance or movement to provide haptic feedback to a user. For example, in an arrangement utilizing a coiled spring or pulley 531, the spring or pulley 531 may be wound to retract a tether and direct or impede a user's movement as desired. In this manner, various new forms of feedback-based interaction become possible, and in virtual reality use cases user engagement and immersion are increased through more natural physical feedback during their interaction.
By applying various forms and intensities of feedback using various tether arrangements, a variety of feedback types may be used to provide haptic output to a user in response to software events. For example, tension on a tether may be used to simulate restrained movement such as wading through water or dense foliage, walking up an inclined surface, magnetic or gravitational forces, or other forms of physical resistance or impedance that may be simulated through directional or non-directional tension. Tugging, retracting, or pulling on a tether may be used to simulate sudden forces such as recoil from gunfire, explosions, being grabbed or struck by a software entity such as an object or character, deploying a parachute, bungee jumping, sliding or falling, or other momentary forces or events that may be conveyed with a tugging or pulling sensation. By utilizing various patterns of haptic feedback, more complex events may be communicated to a user, such as riding on horseback or in a vehicle, standing on the deck of a ship at sea, turbulence in an aircraft, weather, or other virtual events that may be represented using haptic feedback. In this manner, virtual environments and events may be made more immersive and tangible for a user, both by enabling a user to interact using natural body movements and positioning, as well as by providing haptic feedback in a manner that feels natural and expected to the user. For example, if a user is controlling a character in a gaming application through a first-person viewpoint, it would seem natural that when their character is struck there would be a physical sensation corresponding to the event; however, this is not possible with traditional interaction devices, detracting from any sense of immersion or realism for the user. By providing this physical sensation alongside the virtual event, the experience becomes more engaging and users are encouraged to interact more naturally as their actions results in natural and believable feedback, meeting their subconscious expectations and avoiding excessive “immersion-breaking” moments, which in turn reduces the likelihood of users adopting unusual behaviors or unhealthy posture as a result of adapting to limited interaction schema.
Haptic feedback may be provided to notify a user of non-gaming events, such as for desktop notifications for email or application updates, or to provide feedback on their posture for use in fitness or health coaching. For example, a user may be encouraged to maintain a particular stance, pose, or posture while working or for a set length of time (for example, for a yoga exercise application), and if their posture deviates from an acceptable range, feedback is provided to remind them to adjust their posture. This may be used in sports, fitness, health, or ergonomic applications that need not utilize other aspects of virtual reality and may operate as traditional software applications on nonspecialized computing hardware. For example, a user at their desk may use an ergonomic training application that monitors their body posture throughout the work day and provides haptic reminders to correct poor posture as it is detected, helping the user to maintain a healthy working posture to reduce fatigue or injuries due to poor posture (for example, repetitive-stress injuries that may be linked to poor posture while working at a computer).
In an alternate hardware arrangement, the use of angle sensors 621a-n enables tracking of a vertical angle of a tether 620, to detect and optionally measure vertical movement or orientation of a user's torso. When tether 620 contacts a sensor 621a-n, this may be registered and used to detect a general vertical movement (that is, whether the tether is angled up or down). For more precise measurements, the specific hardware construction of a sensor 621a-n may be varied, for example using a pressure-sensing switch to detect how much force is applied and use this measurement to determine the corresponding angle (as may be possible given a tether 620 of known construction). It should be appreciated that various combinations of hardware may be used to provide a desired method or degree of angle detection or measurement, for example using a conductive tether 620 and a capacitive sensor 621a-n to detect contact, or using a mechanical or rubber-dome switch (as are commonly used in keyboard construction) to detect physical contact without a conductive tether 620.
The use of angle detection or measurement may expand interaction possibilities to encompass more detailed and natural movements of a user's body. For example, if a user crouches, then all tethers 410a-n may detect a downward angle simultaneously. Additionally, data precision or availability may be enhanced by combining input from multiple available sensors when possible (for example, utilizing adaptive software to collect data from any sensors that it detects, without requiring specific sensor types for operation), for example by combining data from tethers 410a-n and hardware sensors such as an accelerometer or gyroscope, enabling multiple methods of achieving similar or varied types or precision levels of position or movement detection. Similarly, when a user jumps then all tethers may detect an upward angle simultaneously. However, if a user leans in one direction, it may be appreciated that not all tethers 410a-n will detect the same angle. For example, tethers 410a-n in the direction the user is leaning may detect a downward angle, while those on the opposite side would detect an upward angle (due to the orientation of the user's torso and thus a worn torso harness 420). In this manner, more precise torso interaction may be facilitated through improved detection and recognition of orientation and movement. Additionally, it may be appreciated that sensors 621a-n may be utilized for other angle measurements, such as to detect horizontal angle. For example, if a user is wearing a non-rotating torso harness 420, when they twist their body a similar stress may be applied to all attached tethers 410a-n. Without angle detection the precise nature of this movement will be vague, but with horizontal angle detection it becomes possible to recognize that all tethers 410a-n are being strained in a similar direction (for example, in a clockwise pattern when viewed from above, as a user might view tethers 410a-n during use), and therefore interpret the interaction as a twisting motion (rather than, for example, a user squatting or kneeling, which might apply a similar stress to the tethers 410a-n but would have different angle measurements).
A similar system may be used to measure balance and detect and predict falls by a person with impaired balance abilities. A user 2210 may wear a sensor and electronics package 2131, on the torso. The sensor and electronics package 2131 may be simply a collection of sensors (e.g. accelerometers, gyroscopes, etc.) configured to transmit data to an external computing device, or the sensor and electronics package 2131 may itself have a computing device. The user's body mass, m, can be entered manually or obtained from a wireless scale capable of communicating wirelessly with the sensor and electronics package 2131. As the user's torso moves from the vertical position 2220, the angle from vertical and rate of change of the angle, θ″, 2230 from vertical can be measured, tracked, and used to make predictions about the likelihood of a fall. Angular momentum 2230 may be represented by θ″ 2230, a user's angle deviation from vertical being represented by θ 2220, the force of gravity being represented by g 2240, and the approximate height of a user's body-part acting similar to the bar of an inverted pendulum being represented by L 2250. The data obtained from the sensors and electronics package 2131 may be used in conjunction with various algorithms (e.g. a PID controller) and the user's historical or manually-entered movement ability to determine when the rate of fall is likely to exceed the user's ability to accelerate toward the direction of fall fast enough to right the torso. It is therefore possible to analyze and characterize a user's motions that may lead to a stumble or fall.
For example, when paired with a camera and eye-tracking software, the on-screen elements might represent an eye muscle strengthening exercise combined with brainwave entrainment, wherein the user is asked to find a target on-screen element with a particular shape and follow the shape with his or her eyes. At the same time the target element may flash a particular color at a selected brainwave entrainment frequency, with the color changing as the user's eyes either follow the target on-screen element or stray from it. The target on-screen element may, for example, be a pleasant light-blue color while the user's eyes are following it, and change to a bright red to re-attract the user if the user's eyes start following a different on-screen element.
In another use case, the on-screen elements 3820 may represent a puzzle or game, and the brainwave entrainment may be provided by simply flashing the screen background 3812 at a selected brainwave entrainment frequency.
While not shown here, this example may be extended to virtual reality applications, wherein brainwave entrainment is provided by flashing in-game elements within the virtual reality environment.
Hardware Architecture
Generally, the techniques disclosed herein may be implemented on hardware or a combination of software and hardware. For example, they may be implemented in an operating system kernel, in a separate user process, in a library package bound into network applications, on a specially constructed machine, on an application-specific integrated circuit (ASIC), or on a network interface card.
Software/hardware hybrid implementations of at least some of the embodiments disclosed herein may be implemented on a programmable network-resident machine (which should be understood to include intermittently connected network-aware machines) selectively activated or reconfigured by a computer program stored in memory. Such network devices may have multiple network interfaces that may be configured or designed to utilize different types of network communication protocols. A general architecture for some of these machines may be described herein in order to illustrate one or more exemplary means by which a given unit of functionality may be implemented. According to specific embodiments, at least some of the features or functionalities of the various embodiments disclosed herein may be implemented on one or more general-purpose computers associated with one or more networks, such as for example an end-user computer system, a client computer, a network server or other server system, a mobile computing device (e.g., tablet computing device, mobile phone, smartphone, laptop, or other appropriate computing device), a consumer electronic device, a music player, or any other suitable electronic device, router, switch, or other suitable device, or any combination thereof. In at least some embodiments, at least some of the features or functionalities of the various embodiments disclosed herein may be implemented in one or more virtualized computing environments (e.g., network computing clouds, virtual machines hosted on one or more physical computing machines, or other appropriate virtual environments).
Referring now to
In one embodiment, computing device 10 includes one or more central processing units (CPU) 12, one or more interfaces 15, and one or more busses 14 (such as a peripheral component interconnect (PCI) bus). When acting under the control of appropriate software or firmware, CPU 12 may be responsible for implementing specific functions associated with the functions of a specifically configured computing device or machine. For example, in at least one embodiment, a computing device 10 may be configured or designed to function as a server system utilizing CPU 12, local memory 11 and/or remote memory 16, and interface(s) 15. In at least one embodiment, CPU 12 may be caused to perform one or more of the different types of functions and/or operations under the control of software modules or components, which for example, may include an operating system and any appropriate applications software, drivers, and the like.
CPU 12 may include one or more processors 13 such as, for example, a processor from one of the Intel, ARM, Qualcomm, and AMD families of microprocessors. In some embodiments, processors 13 may include specially designed hardware such as application-specific integrated circuits (ASICs), electrically erasable programmable read-only memories (EEPROMs), field-programmable gate arrays (FPGAs), and so forth, for controlling operations of computing device 10. In a specific embodiment, a local memory 11 (such as non-volatile random access memory (RAM) and/or read-only memory (ROM), including for example one or more levels of cached memory) may also form part of CPU 12. However, there are many different ways in which memory may be coupled to system 10. Memory 11 may be used for a variety of purposes such as, for example, caching and/or storing data, programming instructions, and the like. It should be further appreciated that CPU 12 may be one of a variety of system-on-a-chip (SOC) type hardware that may include additional hardware such as memory or graphics processing chips, such as a QUALCOMM SNAPDRAGON™ or SAMSUNG EXYNOS™ CPU as are becoming increasingly common in the art, such as for use in mobile devices or integrated devices.
As used herein, the term “processor” is not limited merely to those integrated circuits referred to in the art as a processor, a mobile processor, or a microprocessor, but broadly refers to a microcontroller, a microcomputer, a programmable logic controller, an application-specific integrated circuit, and any other programmable circuit.
In one embodiment, interfaces 15 are provided as network interface cards (NICs). Generally, NICs control the sending and receiving of data packets over a computer network; other types of interfaces 15 may for example support other peripherals used with computing device 10. Among the interfaces that may be provided are Ethernet interfaces, frame relay interfaces, cable interfaces, DSL interfaces, token ring interfaces, graphics interfaces, and the like. In addition, various types of interfaces may be provided such as, for example, universal serial bus (USB), Serial, Ethernet, FIREWIRE™, THUNDERBOLT™, PCI, parallel, radio frequency (RE), BLUETOOTH™, near-field communications (e.g., using near-field magnetics), 802.11 (WiFi), frame relay, TCP/IP, ISDN, fast Ethernet interfaces, Gigabit Ethernet interfaces, Serial ATA (SATA) or external SATA (ESATA) interfaces, high-definition multimedia interface (HDMI), digital visual interface (DVI), analog or digital audio interfaces, asynchronous transfer mode (ATM) interfaces, high-speed serial interface (HSSI) interfaces, Point of Sale (POS) interfaces, fiber data distributed interfaces (FDDIs), and the like. Generally, such interfaces 15 may include physical ports appropriate for communication with appropriate media. In some cases, they may also include an independent processor (such as a dedicated audio or video processor, as is common in the art for high-fidelity A/V hardware interfaces) and, in some instances, volatile and/or non-volatile memory (e.g., RAM).
Although the system shown in
Regardless of network device configuration, the system of the present invention may employ one or more memories or memory modules (such as, for example, remote memory block 16 and local memory 11) configured to store data, program instructions for the general-purpose network operations, or other information relating to the functionality of the embodiments described herein (or any combinations of the above). Program instructions may control execution of or comprise an operating system and/or one or more applications, for example. Memory 16 or memories 11, 16 may also be configured to store data structures, configuration data, encryption data, historical system operations information, or any other specific or generic non-program information described herein.
Because such information and program instructions may be employed to implement one or more systems or methods described herein, at least some network device embodiments may include nontransitory machine-readable storage media, which, for example, may be configured or designed to store program instructions, state information, and the like for performing various operations described herein. Examples of such nontransitory machine-readable storage media include, but are not limited to, magnetic media such as hard disks, floppy disks, and magnetic tape; optical media such as CD-ROM disks; magneto-optical media such as optical disks, and hardware devices that are specially configured to store and perform program instructions, such as read-only memory devices (ROM), flash memory (as is common in mobile devices and integrated systems), solid state drives (SSD) and “hybrid SSD” storage drives that may combine physical components of solid state and hard disk drives in a single hardware device (as are becoming increasingly common in the art with regard to personal computers), memristor memory, random access memory (RAM), and the like. It should be appreciated that such storage means may be integral and non-removable (such as RAM hardware modules that may be soldered onto a motherboard or otherwise integrated into an electronic device), or they may be removable such as swappable flash memory modules (such as “thumb drives” or other removable media designed for rapidly exchanging physical storage devices), “hot-swappable” hard disk drives or solid state drives, removable optical storage discs, or other such removable media, and that such integral and removable storage media may be utilized interchangeably. Examples of program instructions include both object code, such as may be produced by a compiler, machine code, such as may be produced by an assembler or a linker, byte code, such as may be generated by for example a JAVA™ compiler and may be executed using a Java virtual machine or equivalent, or files containing higher level code that may be executed by the computer using an interpreter (for example, scripts written in Python, Perl, Ruby, Groovy, or any other scripting language).
In some embodiments, systems according to the present invention may be implemented on a standalone computing system. Referring now to
In some embodiments, systems of the present invention may be implemented on a distributed computing network, such as one having any number of clients and/or servers. Referring now to
In addition, in some embodiments, servers 32 may call external services 37 when needed to obtain additional information, or to refer to additional data concerning a particular call. Communications with external services 37 may take place, for example, via one or more networks 31. In various embodiments, external services 37 may comprise web-enabled services or functionality related to or installed on the hardware device itself. For example, in an embodiment where client applications 24 are implemented on a smartphone or other electronic device, client applications 24 may obtain information stored in a server system 32 in the cloud or on an external service 37 deployed on one or more of a particular enterprise's or user's premises.
In some embodiments of the invention, clients 33 or servers 32 (or both) may make use of one or more specialized services or appliances that may be deployed locally or remotely across one or more networks 31. For example, one or more databases 34 may be used or referred to by one or more embodiments of the invention. It should be understood by one having ordinary skill in the art that databases 34 may be arranged in a wide variety of architectures and using a wide variety of data access and manipulation means. For example, in various embodiments one or more databases 34 may comprise a relational database system using a structured query language (SQL), while others may comprise an alternative data storage technology such as those referred to in the art as “NoSQL” (for example, HADOOP CASSANDRA™, GOOGLE BIGTABLE™, and so forth). In some embodiments, variant database architectures such as column-oriented databases, in-memory databases, clustered databases, distributed databases, or even flat file data repositories may be used according to the invention. It will be appreciated by one having ordinary skill in the art that any combination of known or future database technologies may be used as appropriate, unless a specific database technology or a specific arrangement of components is specified for a particular embodiment herein. Moreover, it should be appreciated that the term “database” as used herein may refer to a physical database machine, a cluster of machines acting as a single database system, or a logical database within an overall database management system. Unless a specific meaning is specified for a given use of the term “database”, it should be construed to mean any of these senses of the word, all of which are understood as a plain meaning of the term “database” by those having ordinary skill in the art.
Similarly, most embodiments of the invention may make use of one or more security systems 36 and configuration systems 35. Security and configuration management are common information technology (IT) and web functions, and some amount of each are generally associated with any IT or web systems. It should be understood by one having ordinary skill in the art that any configuration or security subsystems known in the art now or in the future may be used in conjunction with embodiments of the invention without limitation, unless a specific security 36 or configuration system 35 or approach is specifically required by the description of any specific embodiment.
In various embodiments, functionality for implementing systems or methods of the present invention may be distributed among any number of client and/or server components. For example, various software modules may be implemented for performing various functions in connection with the present invention, and such modules may be variously implemented to run on server and/or client components.
The skilled person will be aware of a range of possible modifications of the various embodiments described above. Accordingly, the present invention is defined by the claims and their equivalents.
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