The present invention is directed to a diagnostic method and apparatus for screening and assisting in diagnosing attention deficit hyperactivity disorder (ADD/ADHD) in a person. For the purpose of clarity, “subject” and “user” are used throughout this description interchangeable. In many embodiments the invention includes a visual problem solving test involving distinctive feature analysis. It facilitates making objective observations of multiple components of attention and executive functioning. To date, it has been used primarily in evaluating individuals suspected of and/or having attention deficit disorder (ADD/ADHD), however additional uses will likely be found by those skilled in the art. The test of the present invention may be administered in a clinical, school, or institutional setting with the assistance of healthcare professionals, teachers, or other persons. The test of the present invention may also be self-administered by the user or test taker.
This test in some embodiments consists of a 24 individual test items with plates of geometric faces. The test requires the subjects to select two identical faces out a field of faces that progressively increase in number and complexity. The geometric faces could instead be graphic faces, stick figures, geometric shapes or other visual stimuli in other embodiments. The test in the 24 item embodiments takes about ten minutes to complete. Correct/incorrect scores and response times are compared to normative data and coupled with structured behavioral observations to provide objective evidence of the subject's attentional and executive functioning status.
The test items could be contained in a test administration booklet or more preferably within a software application that can be administered on electronic devices (e.g. smartphones, tablet computers, or dual-touch computers). U.S. Pat. No. 7,479,949 entitled “Touch screen device, method, and graphical user interface for determining commands by applying heuristics”, which is incorporated herein by reference, describes a device that could be configured via software application to practice a number of embodiments of the present invention.
The test generates objective outcome data including correctness/incorrectness of responses and response times for individual test items and various groupings of items. This data can be correlated with various physiological parameters that are simultaneously recorded during performance of the test/s (e.g. heart rate, galvanic skin resistance, eye tracking movements, facial analysis of emotional or behavioral state, etc.). In addition, when administered by an examiner or when an examiner views a recorded video of the subject taking the test, the examiner completes a checklist of structured behavioral observations made during testing for additional data. It is envisioned this checklist could be completed autonomously via video analysis software using video captured of the subject taking the test/s. For example, software could analyze the facial expressions made by the subject during the test and be able to correlate those facial expressions with specific items of the test. These facial expressions can be used to evidence or even determine the user's mood, emotional or behavioral state.
The present invention provides objective data to help more accurately screen and assist in diagnosing ADD/ADHD and related executive dysfunctions and, thereby, reduce both over and under diagnosis of this common problem. The present invention also provides an objective means to identify the proper medication and dosage regimens for ADD/ADHD individuals requiring medical treatment, thereby, enhancing treatment efficacy, compliance and safety. The present invention provides a means to objectively monitor the evolution of genetically-based ADD/ADHD symptoms over time so that the treatment regimens (medical and non-medical) can be refined as needed.
The objective data, physiological parameters and structured observations are integrated through algorithms to generate a rating of the following attentional characteristics and executive functions: level of arousal/alertness; cognitive tempo—impulsivity/reflectivity balance; vigilance; sustaining focus and filtering distractions; short-term working memory; response generation; complex problem solving; and/or self-monitoring/self-regulation.
These ratings can be used to enhance diagnostic accuracy of an evaluation for attention deficit disorder (ADD/ADHD) and other disorders of cognitive functioning. They can also serve as a baseline to tract the impact of various therapeutic interventions used to treat ADD/ADHD. Serial administration of the test/s of the present invention and its various iterations before, during, and after various interventions (e.g. medication, biofeedback, counseling strategies, etc.) generates comparative data in graphic, tabular, and other forms that can facilitate clinical decision-making. Similarly, serial administration of the test/s of the present invention and its various iterations makes it possible to track the development of attention and executive functioning over time and allows for comparison with the progression of these functions in neurotypical control populations. Another advantage or benefit is with the use of graphical images, it can be easily administered to a broad multilingual population across many ages from children to adults. The only pre-requisite is that the subjects understand the concept of “same/different”.
In one embodiment, the invention is a system for evaluating attentional ability, executive functions, and attention deficit disorders and other disorders of cognitive functioning, including an electronic touch screen display configured to display visual information via a graphical user interface, a processor configured to control the electronic touch screen display, wherein the electronic touch screen display is configured to display a set of indicia or images comprising at least one of the following: at least one identical matching pair of indicia or images and at least one indicia or images distinct from other indicia or images of the set of indicia or images, wherein the processor is configured to record an input to the system to a writable memory, wherein the input recorded to the writable memory comprises at least one of the following: a user's touching of both indicia or image of the at least one identical matching pair of indicia or images displayed on the electronic touch screen display and a user's touching of the at least one indicia or images distinct from other indicia or images of the set of indicia or images, wherein the input recorded to writable memory further comprises at least one of a time taken to touch an indicia or image, a number of correct matches, a number of incorrect matches, a demographic input regarding the user, the user's heart rate, the user's galvanic skin resistance, the user's eye movements, the user's facial expression, or other physiological input, wherein the processor is configured to generate a rating for at least one of the user's level of arousal, the user's level of alertness, the user's cognitive tempo, the user's vigilance, the user's short-term working memory, the user's response generation, the user's complex problem solving or the user's self monitoring based on the input recorded to writable data. In another embodiment the processor is configured to randomize the position of the set of indicia or images, and the processor is configured to randomize the composition of the set of indicia or images displayed chosen from a database of indicia or images. In another embodiment the processor is configured to randomize the number of indicia or images displayed, and the processor is configured to randomize the position of the set of indicia or images to be displayed chosen from a database of indicia or images. In another embodiment the invention further includes a camera configured to record a video of the user, the video is recorded onto the writable memory via the processor. In another embodiment the processor is configured to analyze said video to determine one of the user's facial expressions, the user's eye movements, and the user's emotional states. In another embodiment the processor is configured to analyze said video to determine changes in background light or movement. In another embodiment the processor is configured to analyze said video to determine changes in background light or movement, and wherein the processor is configured to provide instructions to the user if a predetermined level of movement or changes in background light is detected from the video. In another embodiment the invention further includes a speaker, where the processor is configured to output audio instructions via said speaker to the user. In another embodiment the invention includes a microphone, wherein said processor is configured to detect sounds from the microphone. In another embodiment the processor is configured to analyze said sounds via the microphone to determine a level of background noise, and where the processor is configured to provide instructions to the user if a predetermined level of background noise is detected from the microphone.
In one embodiment, the invention is a method of evaluating attentional ability, executive functions, and attention deficit disorders and other disorders of cognitive functioning, including the steps of providing an apparatus including an electronic touch screen display configured to display visual information via a graphical user interface, a processor configured to control the electronic touch screen display, wherein the electronic touch screen display is configured to display a set of indicia or images comprising at least one of the following: at least one identical matching pair of indicia or images and at least one indicia or images distinct from other indicia or images of the set of indicia or images, wherein the processor is configured to record an input to the system to a writable memory; recording to writable memory at least one of a time taken to touch both indicia or image of the at least one identical matching pair of indicia or images, a time taken to touch at least one indicia or images distinct from other indicia or images of the set of indicia or images, a number of correct matches, a number of incorrect matches, a demographic input regarding the user, the user's heart rate, the user's galvanic skin resistance, the user's eye movements, the user's facial expression, or other physiological input, and generating a rating for at least one of the user's level of arousal, the user's level of alertness, the user's cognitive tempo, the user's vigilance, the user's short-term working memory, the user's response generation, the user's complex problem solving or the user's self monitoring based on the input recorded to writable data. In another embodiment the processor is configured to randomize the position of indicia or images of the set of indicia or images, and wherein the processor is configured to randomize the set of indicia or images selected to be displayed chosen from a database of indicia or images. In another embodiment the processor is configured to randomize the number indicia or images displayed, and where the processor is configured to randomize the position of the set of indicia or images selected to be displayed chosen from a database of indicia or images. In another embodiment the apparatus includes a camera configured to record a video of the user, wherein said video is recorded onto the writable memory via the processor. In another embodiment the processor is configured to analyze said video to determine one of the user's facial expressions, the user's eye movements, and the user's emotional states. In another embodiment the processor is configured to analyze said video to determine changes in background light or movement. In another embodiment the processor is configured to analyze said video to determine changes in background light or movement, and wherein the processor is configured to provide instructions to the user if a predetermined level of movement or changes in background light is detected from the video. In another embodiment the apparatus includes a speaker, wherein said processor is configured to output audio instructions via said speaker to the user. In another embodiment the apparatus includes a microphone, where said processor is configured to detect sounds from the microphone. In another embodiment the processor is configured to analyze said sounds via the microphone to determine a level of background noise, and where the processor is configured to provide instructions to the user if a predetermined level of background noise is detected from the microphone.
The present invention provides for a diagnostic method and apparatus for screening and assisting in diagnosing attention deficit hyperactivity disorder (ADD/ADHD) in a person. In many embodiments the invention includes a visual problem solving test involving distinctive feature analysis.
These and other features and characteristics of the present invention, as well as the methods of operation and functions of the related elements of structures and the combination of parts and economies of manufacture, will become more apparent upon consideration of the following description with reference to the accompanying drawings, all of which form a part of this specification, wherein like reference numerals designate corresponding parts in the various figures. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the invention. As used in the specification, the singular form of “a”, “an”, and “the” include plural referents unless the context clearly dictates otherwise.
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The embodiments described above can be modified in a variety of ways to create various iterations of the test. This may include some combination of the following modifications:
A. Altering the number or type of images to be selected by the subject on a given plate or within sections (ex. Search, Scan, Extended Field Search, etc.):
B. Altering the number of images and the progression of the number of distinctive features within a given section or block within a section:
C. Expanding or contracting the number of blocks and their order of presentation.
D. Expanding or contracting the number of images and/or the number of matches on at least one plate.
E. Altering plates to be non-identical or dissimilar with respect to the number of images, the total number of matched pairs/matches, and/or the number of images that are identical that need to be selected by the subject.
F. Altering the types of images within a given test format from plate-to-plate, block-to-block, or section-to-section.
For a given test configuration, multiple random arrangements of positions on a plate are possible. The randomization of the number and type of images and distinctive features across the plates of the search section, scan section, and/or the extended filed search section could be conducted via the processor of the tablet computer 100 or via a cloud server's processor.
It is also envisioned that instead of having the user search for matching pairs of images or indicia on a plate, they could search for at least one image that is different in a field of mostly matching images. This arrangement could be in the alternative or in addition to searching for matching pairs of images or indicia on a plate. The automatic random feature of the present invention allows for more reliable serial testing of a user, since the user will not be able to memorize the randomly generated plates.
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Although the invention has been described in detail for the purpose of illustration based on what is currently considered to be the most practical and preferred embodiments of the application, it is to be understood that such detail is solely for that purpose and that the invention is not limited to the described embodiment. To the contrary, it is intended to cover modifications and equivalent arrangements that are within the spirit and scope of the appended claims. For example, it is to be understood that the present invention contemplates that, to the extent possible, one or more features of any embodiment can be combined with one or more features of any other embodiment.
This application is related to and is a continuation application of U.S. patent application Ser. No. 15/185,107, entitled “Apparatus and Method of Conducting Medical Evaluation of ADD/ADHD” which was filed Jun. 17, 2016 which claims priority from U.S. Provisional Patent Application No. 62/180,739, entitled “Apparatus and Method of Conducting Medical Evaluation of ADD/ADHD” which was filed Jun. 17, 2015 and are hereby incorporated by reference in their entirety.
Number | Date | Country | |
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62180739 | Jun 2015 | US |
Number | Date | Country | |
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Parent | 15185107 | Jun 2016 | US |
Child | 16374793 | US |