Cognitive function testing system, cognitive function estimation system, cognitive function testing method, and cognitive function estimation method

• US 9,848,811 B2
• Filed: 01/22/2013
• Issued: 12/26/2017
• Est. Priority Date: 01/26/2012
• Status: Active Grant

• Current Assignee: National Center of Neurology and Psychiatry
• Original Assignee: National Center of Neurology and Psychiatry
• Inventors: Yasumura, Akira, Inagaki, Masumi
• Primary Examiner(s): Natnithithadha, Navin
• Application Number:
  US14/374,048
• Publication Number:
  US 20150119731A1
• Time in Patent Office: 1,799 Days
• Field of Search: 600544, 600545
• CPC Class Codes: A61B 5/026 Measuring blood flow A61B3/1233, A61B3/1241 take precedence
• CPC Class Codes: A61B 5/165 Evaluating the state of mind, e.g. depression, anxiety
• CPC Class Codes: A61B 5/167 Personality evaluation
• CPC Class Codes: A61B 5/168 Evaluating attention deficit, hyperactivity
• CPC Class Codes: A61B 5/369 Electroencephalography [EEG] devices for psychotechnics A61B5/16
• CPC Class Codes: A61B 5/377 using evoked responses
• CPC Class Codes: A61B 5/378 Visual stimuli

Abstract

Provided is a cognitive function testing system capable of efficiently and objectively measuring cognitive functions related to, for example, ADHD and easily collecting detailed data. In addition, a cognitive function estimation system is provided to enable estimating and determining the probability of an individual having a disorder such as ADHD after the cognitive functions related to, for example, ADHD have been efficiently and objectively measured. In contrast to the conventional Stroop interference test that uses paper, one problem is displayed on one screen, and not only the correctness result of the problem for the test subject, but also coordinate information for when the test subject responds by manipulating a touch panel display, are recorded in a problem answer table. Furthermore, an estimation calculation based on a learning algorithm can be used to estimate the degree of cognitive function of the test subject.

Claims

1. A cognitive function testing system comprising:

a display section capable of displaying a plurality of colors;

a position detecting section configured to output coordinate information of a position touched with a subject'"'"'s finger or a position indicator used by the subject, and configured to form a touch panel display by being combined with the display section;

a task creating section configured to create a task including tiles of a plurality of colors and words indicating colors, for being displayed on the display section;

a task answer table recording the task and the coordinate information; and

an input/output control section configured to display the task on the display section and record the task and the coordinate information in the task answer table.

2. The cognitive function testing system according to claim 1, further comprising:

a timer configured to measure elapsed time,

wherein

the input/output control section records, in the task answer table, a response time from a time when the task is displayed on the display section by using the timer to a time when the position detecting section is operated.

3. The cognitive function testing system according to claim 2, further comprising:

a brain activity table recording data derived from brain activity of the subject; and

a brain activity recording section configured to record, in the brain activity table by a predetermined sampling clock, the data derived from brain activity of the subject and trigger data generated by the input/output control section at a predetermined timing.

4. A cognitive function estimation system comprising:

a display section capable of displaying a plurality of colors;

a position detecting section configured to output coordinate information of a position touched with a subject'"'"'s finger or a position indicator used by the subject, and configured to form a touch panel display by being combined with the display section;

a task creating section configured to create a task including tiles of a plurality of colors and words indicating colors, for being displayed on the display section;

a task answer table recording the task and the coordinate information; and

an input/output control section configured to display the task on the display section, record the task and the coordinate information in the task answer table, and estimate the cognitive function of the subject on the basis of the task and the coordinate information recorded in the task answer table.

5. The cognitive function estimation system according to claim 4, further comprising:

a timer configured to measure elapsed time,

wherein

the input/output control section records, in the task answer table, a response time from a time when the task is displayed on the display section by using the timer to a time when the position detecting section is operated.

6. The cognitive function estimation system according to claim 4, further comprising:

a brain activity table recording data derived from brain activity of the subject; and

a brain activity recording section configured to record, in the brain activity table by a predetermined sampling clock, the data derived from brain activity of the subject and trigger data generated by the input/output control section at a predetermined timing,

wherein

the input/output control section estimates the cognitive function of the subject on the basis of data derived from brain activity of the subject and recorded on the brain activity table.

7. A cognitive function testing method comprising:

a task displaying step of creating a task including tiles of a plurality of colors and words indicating colors, and displaying the task on a display section capable of displaying a plurality of colors;

an answer recording step of outputting coordinate information of a position touched with a subject'"'"'s finger or a position indicator used by the subject, and recording, in a task answer table together with the task, the coordinate information obtained from a position detecting section that forms a touch panel display by being combined with the display section; and

a repeating step of repeating the task displaying step and the answer recording step during a predetermined time period.

8. The cognitive function testing method according to claim 7, wherein

the answer recording step also records, in the task answer table, the elapsed time from a time when the task is displayed on the display section at the task displaying step to a time when the coordinate information is obtained from the position detecting section.

9. The cognitive function testing method according to claim 8, further comprising:

a brain activity recording step of recording data derived from brain activity of the subject in the brain activity table while the repeating step is being performed.

11. The cognitive function estimation method according to claim 9, wherein

the answer recording step also records, in the task answer table, the elapsed time from a time when the task is displayed on the display section at the task displaying step to a time when the coordinate information is obtained from the position detecting section.

12. The cognitive function estimation method according to claim 11, further comprising:

a brain activity recording step of recording data derived from brain activity of the subject in the brain activity table while the repeating step is being performed,

wherein

the cognitive function estimating step also uses data derived from brain activity of the subject and recorded in the brain activity table, for an estimation calculation of the cognitive function.

10. A cognitive function estimation method comprising:

a task displaying step of creating a task including tiles of a plurality of colors and words indicating colors, and displaying the task on a display section capable of displaying a plurality of colors;

an answer recording step of outputting coordinate information of a position touched with a subject'"'"'s finger or a position indicator used by the subject, and recording, in a task answer table together with the task, the coordinate information obtained from a position detecting section that forms a touch panel display by being combined with the display section;

a repeating step of repeating the task displaying step and the answer recording step during a predetermined time period; and

a cognitive function estimating step of estimating the cognitive function of the subject on the basis of the task and the coordinate information, recorded in the task answer table.