Attention function inspection support system and attention function inspection support program

Abstract

To reduce a burden on an inspection of a subject who performs an attention function inspection.SOLUTION: An attention function inspection support system (S) includes: inspection image display means (71) for displaying an image for an attention function inspection on a screen (7a); contact position detection means (72) for detecting a position in which a contact part (8a) for performing an input to select any character on the image comes into contact with the screen (7a); pressure detection means (73) for detecting pressure of the contact part (8a) making contact with the screen (7a); visual line detection means (74) for detecting a position at which a subject views on the screen (7a); storage means (76) for storing according to time passage a detection result of the contact position detection means (72), a detection result of the pressure detection means (73) and a detection result of the visual line detection means (74); and result display means (77) for displaying on the screen (7a) the position and pressure of the contact part (8a) and the viewing position according to a time sequence based on information stored in the storage means (76).SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an attention function test support system and an attention function test support program for supporting the testing of a subject's attention function, and in particular to an attention function test support system and an attention function test support program that can be suitably used by doctors and others to diagnose and judge attention function. [Background technology]

[0002] It is known that when a person suffers serious brain damage due to a traffic accident or cerebrovascular disorder, they may suffer from higher brain dysfunction such as decreased intelligence, memory impairment, attention disorder, and impaired elaboration function. People with brain damage, including those with mild to moderate brain damage, need to consider resuming driving when returning to society, and it is thought that the most important factor in resuming driving is the distribution of attention function. In particular, the decline in brain function in elderly drivers is also a social problem. Due to these social backgrounds, there is an increasing demand for tests of driving resumption judgment and attention function for patients with higher brain dysfunction and the elderly. The Trail Making Test (TMT) is a neuropsychological test known as a test of attention function. There are two types of TMT: Type A, in which participants connect numbers from 1 to 25 in ascending order on a piece of paper on which numbers are printed discretely, and Type B, in which participants connect numbers and kana characters in alternating order, such as "1 → a → 2 → i → 3 → u → ..." on a piece of paper on which numbers and kana characters are printed discretely. In conventional TMT tests, the time from the start to the end of Type A and Type B is measured to test and diagnose attention function.

[0003] Non-Patent Documents 1 to 3 disclose known technologies related to TMT, in which TMT, which was previously conducted on paper, is displayed on a tablet device and the screen of the tablet device is traced with a finger or a pen, while also using an eye-gaze measurement sensor to conduct TMT and analyze it. In addition, non-patent documents 4 and 5 disclose techniques for implementing TMT using eye gaze as input and analyzing the results. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] Ryuta Tonomura and 4 others, "Attention Function Assessment Support System for New Indicators for Resuming Autonomous Driving", Japan Society of Traffic Science, 2018, Japan Society of Traffic Science, Vol. 18, No. 2, p3-p12 [Non-Patent Document 2] Chiaki Onoda and 1 other person, "Possibility of Evaluating Cognitive Function Using Tablet PC Version of Trail Making Test", Japan Society for Educational Information, 2013, 29th Annual Meeting of Japan Society of Traffic Sciences (2013), pp. 412-413 [Non-Patent Document 3] Takahiro Takeda, "Development of Smart TMT Using Tablet Devices", Daiichi Institute of Technology, 2021, Daiichi Institute of Technology Research Report, No. 33 (2021) pp. 47-50 [Non-Patent Document 4] Yu Okuda and 2 others, "Analysis of individual differences in the Trail Making Test using eye tracking," Hijiyama University, Yoshida Laboratory, Graduation thesis abstract (2016) [Non-Patent Document 5] Stephen L. Hicks, et al., “An Eye-Tracking Version of the Trail-Making Test”, PLOS ONE, December 2013, Volume 8, Issue 12, e84061 Summary of the Invention [Problem to be solved by the invention]

[0005] (Problems with the Prior Art) In the conventional techniques described in Non-Patent Documents 1 to 5, detailed and accurate data such as the elapsed time of TMT and records of incorrect answers are analyzed for analysis, as well as differences in gaze measurement movements and eye movements, etc. However, the conventional techniques only measure hand movements and gaze movements related to TMT separately, and do not consider the relationship between the two. For example, there are many things that need to be analyzed, such as whether the subject is looking for the next number or letter, checking their hand (pen tip), staring at the next letter, or searching for the next letter while moving their fingertip (pen tip) toward the next letter, but such analysis is not performed with conventional technology, and such analysis is difficult with conventional technology. In particular, when the brain cannot recognize where the fingertip is, it is easy to frequently check the hand, and in the case of hemispatial neglect, there are areas that the brain cannot recognize, so it is easy to look at the hand.

[0006] In addition, the TMT itself is a static test, so to speak, since all the letters are presented from the beginning. On the other hand, driving a car involves changes in the road and surrounding conditions as the car moves, changes in traffic lights, and the movements of pedestrians, bicycles, other cars, etc. In other words, driving a car has many dynamic elements, so it is more appropriate to conduct a test that includes dynamic elements. Therefore, the TMT has a problem in that it has few dynamic elements and is insufficient for evaluating attention function in preparation for resuming driving a car. Furthermore, the conventional technologies described in Non-Patent Documents 1-3 require sensors for detecting gaze, sensors for detecting hand movements, and a PC for analysis, and TMT can only be performed in places where these systems are installed, which results in a problem of low simplicity and convenience.

[0007] A first technical objective of the present invention is to reduce the burden on subjects undergoing attention function tests, as compared to conventional techniques. The second technical objective is to realize dynamic attention function testing. Furthermore, the third technical challenge is to improve the ease of attention function testing. [Means for solving the problem]

[0008] In order to solve the above technical problem, the attention function test support system of the invention described in claim 1 comprises: a test image display means for displaying an image for testing attention function on a screen in which a plurality of test characters are discretely arranged; a touch position detection means for detecting a position at which a touch unit for inputting to select any one of the characters on the image touches the screen; a pressure detection means for detecting a pressure with which the contact portion contacts the screen; a gaze detection means for detecting a position on the image where a subject is looking based on the gaze of the subject taking the attention function test; a storage means for storing a detection result of the contact position detection means, a detection result of the pressure detection means, and a detection result of the line of sight detection means in accordance with the passage of time; a result display means for displaying the position of the contact part, the pressure, and the viewing position on the screen in chronological order based on the information stored in the storage means; The present invention is characterized by comprising:

[0009] The invention described in claim 2 is the attention function test support system described in claim 1, A motion detection means for detecting a motion of a hand of a subject; the storage means for storing the detection result of the motion detection means over time; the result display means for displaying on the screen the position of the contact part, the pressure, the viewing position, and the hand movement in chronological order based on the information stored in the storage means; The present invention is characterized by comprising:

[0010] The invention described in claim 3 is the attention function test support system described in claim 2, A terminal having the screen; An imaging means built into the terminal; an extension means for extending an angle of view of the imaging means; the motion detection means for detecting a motion of the subject's hand based on an image capturing result by the image capturing means; The present invention is characterized by comprising:

[0011] The invention described in claim 4 is the attention function test support system described in claim 1, the test image display means for displaying some of the test characters on the screen based on a display order given to each of the test characters, and when an input is made to select a displayed character, making the inputted character non-displayable and displaying the test character that is next in the display order on the screen; The present invention is characterized by comprising:

[0012] In order to solve the above technical problem, the attention function test support program of the invention described in claim 5 comprises: Computer, a test image display means for displaying an image for the attention function test on a screen in which a plurality of test characters are discretely arranged; a contact position detection means for detecting a position at which a contact portion for inputting to select any one of the characters on the image comes into contact with the screen; a pressure detection means for detecting a pressure with which the contact portion contacts the screen; a gaze detection means for detecting a position on the image where a subject is looking based on the gaze of the subject taking the attention function test; a storage means for storing a detection result of the contact position detection means, a detection result of the pressure detection means, and a detection result of the line of sight detection means in accordance with the passage of time; a result display means for displaying the position of the contact part, the pressure, and the viewing position on the screen in chronological order based on the information stored in the storage means; The present invention is characterized in that it functions as a Effect of the Invention

[0013] According to the invention described in claims 1 and 5, by storing and displaying the position of the contact area, pressure, and viewing position in chronological order, the burden on subjects undergoing attention function tests can be reduced compared to conventional techniques. According to the invention described in claim 2, analysis and evaluation from multiple viewpoints are possible, compared to a case where hand movements are not detected. According to the invention described in claim 3, attention function testing can be performed using a terminal having a built-in imaging means, thereby improving the convenience of attention function testing compared to conventional configurations that require a sensor for gaze detection. According to the invention described in claim 4, a dynamic attention function test can be realized, in contrast to the conventional technology in which all test characters are displayed. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is an explanatory diagram of an attention function test support system according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a functional block diagram of the attention function test support system according to the first embodiment. [Diagram 3] FIG. 3 is an explanatory diagram of an example of a result image of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Next, specific examples of the present invention (hereinafter, referred to as examples) will be described with reference to the drawings, but the present invention is not limited to the following examples. In the following description using the drawings, illustrations of components other than those necessary for the description are omitted as appropriate to facilitate understanding. EXAMPLES

[0016] FIG. 1 is an explanatory diagram of an attention function test support system according to a first embodiment of the present invention. 1, an attention function test support system S according to a first embodiment of the present invention includes a server 1 as an example of an information processing device. The server 1 includes a server main body 1a, a display 1b, and a keyboard 1c and a mouse 1d as examples of input devices. The server main body 1 is connected to an information communication line 2. The tablet terminal 7, which is an example of a terminal used by the subject, has a touch panel 7a, which is an example of a display unit (screen) and an example of an input unit. A camera 7b, which is an example of an imaging member and an example of a line of sight detection member, is disposed on the outer edge of the touch panel 7a. The tablet terminal 7 is configured to be able to communicate with the server 1 via the information communication line 2 by wireless communication.

[0017] The tablet terminal 7 of the first embodiment is configured to be able to input to the touch panel 7a using a pen member 8 as an example of an input tool. A pressure sensor (not shown) as an example of a pressure detection member is built into the tip of the pen member 8, and the contact pressure between the tip of the pen member 8 and the touch panel 7a can be detected. The pen member 8 is configured to be able to transmit and receive information to and from the tablet terminal 7 by wireless communication. Note that, in the embodiment, a configuration in which the pressure sensor of the pen member 8 is used to detect the contact pressure (writing pressure) is exemplified, but this is not limiting. For example, if the touch panel 7a itself is configured to be able to detect the writing pressure, the contact pressure can be detected even when an input is made using a finger.

[0018] Further, a wide-angle lens 9 as an example of an extension member is attached to the camera 7b of the tablet terminal 7 of the embodiment. The wide-angle lens 9 extends the angle of view of the camera 7b. Therefore, the camera 7b of the embodiment 1 also has a function as an example of a motion detection member, and the camera 7b can detect the movement of a person's hand (hand movement). In the first embodiment, the pen member 8 is used to detect input to the touch panel 7a, but the present invention is not limited to this. It is also possible to detect input to the touch panel 7a based on the position of the finger detected by the camera 7b. At this time, it is also possible to detect the input when the finger is close to the touch panel 7a but not in contact with it, that is, a so-called touchless input mode. It is also possible to determine and detect that the closer the distance between the finger and the touch panel 7a, the higher the writing pressure.

[0019] (Tablet device 7 functions) FIG. 2 is a functional block diagram of the attention function test support system according to the first embodiment. 2, in the attention function test support system S of the first embodiment, the control unit 70 of the tablet terminal 7 is configured by a portable computer device having an I / O (input / output interface) for inputting and outputting signals to and from the outside and adjusting input / output signal levels, a ROM (read-only memory) in which programs and data for performing necessary startup processing are stored, a RAM (random access memory) for temporarily storing necessary data and programs, a CPU (central processing unit) for performing processing according to the startup program stored in the ROM, etc., and a clock oscillator, etc. Thus, the control unit 70 of the tablet terminal 7 can realize various functions by executing the programs stored in the ROM and RAM, etc.

[0020] The control unit 70 of the tablet terminal 7 in the first embodiment has the following functional means (program modules) 71 to 77. The test image display means 71 displays an image for the attention function test in which a plurality of test characters (numbers and kana characters) are arranged discretely on the touch panel 7a. In order to produce dynamic elements, the test image display means 71 of the first embodiment assigns a display order to each of the discretely arranged test characters, and displays one or more of the plurality of characters on the touch panel 7a in order from the smallest display order among the plurality of characters. That is, unlike the conventional TMT, instead of displaying all the characters at once, a part (one or more) of all the characters is displayed on the touch panel 7a. When an input is made to select one of the displayed characters, the test image display means 71 erases the display of the selected character from the touch panel 7a and displays the next character in the display order on the touch panel 7a. When the number of characters displayed at one time on the touch panel 7a is small, it is easy to follow in terms of short-term memory, but as the number of characters displayed increases, it becomes closer to normal TMT. The contact position detection means 72 detects the position (coordinates) where the tip of the pen member 8 contacts the touch panel 7a. The contact position detection means 72 detects the coordinates based on a predetermined origin on the touch panel 7a (for example, the lower left corner of the touch panel 7a).

[0021] The pressure detection means 73 detects the pressure of the contact portion (the tip 8a of the pen member 8) contacting the touch panel 7a. The pressure detection means 73 of the first embodiment detects the contact pressure based on the detection result of the pressure sensor transmitted from the pen member 8. The gaze detection means 74 detects the position on the screen where the subject is looking. The gaze detection means 74 of the first embodiment detects the gaze of the subject based on an image captured by the camera 7b. The gaze detection itself can use a conventionally known eye tracking technology. The eye tracking technology is described in, for example, Non-Patent Documents 4 and 5, and is conventionally known, so a detailed description will be omitted.

[0022] The motion detection means 75 detects the motion of the subject's hand. The motion detection means 75 of the first embodiment detects the motion of the subject's hand based on the detection result of the camera 7b. As an example of the motion of the hand, when moving the pen member 8 toward the next character in the attention function test, it is possible to detect whether the hand is moving upward, downward, leftward or rightward relative to the touch panel 7a, whether it is moving in a circular motion, or whether it is moving back and forth (vibrating, convulsing) in the same place. The storage means 76 stores, over time, the detection results of the contact position detection means 72, the pressure detection means 73, the gaze detection means 74, and the motion detection means 75. The storage means 76 of the first embodiment stores time history information (profile data, time-series multimodal data) of the detection results of the contact position, contact pressure, gaze, and motion, in association with the elapsed time from the start of the attention function test.

[0023] FIG. 3 is an explanatory diagram of an example of a result image of the embodiment. The result display means 77 displays a result image 101 including the contact position of the contact part (tip 8a of the pen member 8), the contact pressure, the position (gaze) where the subject is looking, and the hand movement on the touch panel 7a according to a time series based on the information stored in the storage means 76. In FIG. 3, the result image 101 of the first embodiment has a time bar 102a indicating the elapsed time, a play button 102b for advancing the elapsed time, and a time designation input section 102c for designating the time to be displayed. In the first embodiment, the time bar 102a includes a time display section 102d for displaying the currently displayed time, and is configured to be able to change the displayed time by touching the time display section 102d with a finger or the pen member 8 and moving it along the time bar 102a. In addition, the result image 101 has a contact position display section 103 for displaying the contact position, a pressure display section 104 for displaying the contact pressure, a gaze display section 105 for displaying the gaze, and an action display section 106 for displaying the hand movement.

[0024] In the contact position display unit 103 of the first embodiment, as an example, a history according to the elapsed time of the contact position is displayed, with the time (elapsed) before the time display unit 102d being displayed by a solid line, and the time (not yet elapsed) after the time display unit 102d being displayed by a dashed line. In the pressure display unit 104, as an example, a graph is displayed with the elapsed time on the horizontal axis and the pressure on the vertical axis, and dashed line 104a is displayed at the time corresponding to the time display unit 102d. In the gaze display unit 105, as an example, a history according to the elapsed time of the gaze is displayed, with the time (elapsed) before the time display unit 102d being displayed by a solid line, and the time (not yet elapsed) after the time display unit 102d being displayed by a dashed line. In the action display unit 106, the judgment result of the action at each time is displayed. Furthermore, the result image 101 of the first embodiment also includes a completion time display section 107 that displays the time taken to complete the TMT, and a correct answer rate display section 108 that displays the correct answer rate.

[0025] (Function of Example 1) In the attention function test support system S of the embodiment 1 having the above configuration, when the attention function test is performed, not only the time until the end but also the contact position, contact pressure, gaze, and movement are stored in association with the elapsed time. Therefore, not only the time until the end as in the conventional TMT, but also the contact position, contact pressure, gaze, and movement of the tip of the pen member 8 at each time can be displayed. Therefore, a doctor who diagnoses the attention function of a subject can make a judgment not only based on the time until the attention function test is completed but also by taking into consideration the movement of the pen member 8, writing pressure (contact pressure), gaze, hand movement, etc. of the subject during the attention function test. The movement of the pen member 8 can be used to determine whether the subject answers correctly or incorrectly in the attention function test, and the combination of the movement and the passage of time allows the doctor to determine whether the subject is moving slowly while searching for the next letter, or whether the subject is recognizing the next letter and moving quickly. Also, if the writing pressure is low, the doctor can determine whether the subject is moving smoothly toward the next letter. Furthermore, the movement of the eyes allows the doctor to determine whether the subject is searching for the next letter or looking at his or her hand. Furthermore, if the hand vibrates in the same place, it can be determined that the subject is mentally frustrated because he or she cannot find the next letter. In addition, the movement of the pen member 8 and the movement of the eyes can also be used to determine whether the subject is in the "stage of searching for the next object" or the "stage of moving toward the target after dispatching it," making multifaceted analysis possible.

[0026] Therefore, the attention function test support system S of the first embodiment can support a doctor's diagnosis of the attention function test according to each individual subject, more than the conventional TMT. Also, for example, it is possible to cluster the distribution of gaze in the entire attention function test (for example, the subject often looks at the hand), and extract gaze movement and saccades (points where the gaze moves quickly) based on the presence or absence of a connection relationship between nodes (representative points of gaze positions or passing points) as characteristic points in the analysis method. Also, it is possible to perform analysis such as clustering on time series data such as the writing pressure of the pen member 8 and the position of the hand that are input.

[0027] In addition, when applied to subjects with symptoms of attention function such as patients with higher brain dysfunction or elderly subjects, detailed analysis and evaluation from multiple perspectives is possible from the time history of the movement of the pen member 8, the time history of the writing pressure, the time history of the gaze, etc., rather than a single judgment criterion of diagnosis based only on the time until completion as in conventional TMT, and application to analysis and evaluation of not only attention function but also cognitive function is expected. Therefore, by applying not only attention function but also cognitive function, it can be useful for application to, for example, judgment of whether or not to drive a car and rehabilitation. In particular, the attention function test support system S of Example 1 may be used to diagnose not only attention function but also cognitive function and hemispatial neglect, etc., with a single test using the tablet terminal 7, and it is possible to reduce the burden of the test on the subject compared to conventional technologies in which the subject had to individually perform tests for cognitive function and other diseases. Furthermore, by having the subjects undergo regular tests, for example once a year, and accumulating the test results, it is also possible to monitor and evaluate changes in attention and cognitive function that occur with aging and over time (such as worsening symptoms and the recovery process due to treatment) over the long term.

[0028] Furthermore, in Example 1, the characters displayed on the touch panel 7a are displayed in sequence and discretely, which has more dynamic elements than the conventional TMT in which all characters are displayed at once. Therefore, compared to the conventional TMT which can only perform static tests, dynamic tests are possible, and it is possible to test attention functions and cognitive functions in situations requiring dynamic elements such as driving a car. In addition, in the attention function test support system S of the first embodiment, the attention function test can be performed only with the tablet terminal 7. In the conventional TMT, a sensor for detecting gaze, a sensor for detecting hand movements, and a PC for analysis are required, and TMT can only be performed in a place where these systems are installed, which has a problem of low simplicity and convenience. In contrast, in the first embodiment, the attention function test is possible with a smaller additional configuration than adding a sensor, that is, using the built-in camera 7b of the tablet terminal 7 and installing a wide-angle lens 9. Therefore, the attention function test can be performed in various places by carrying the tablet terminal 7, and simplicity and convenience are improved.

[0029] (Example of change) Although the embodiments of the present invention have been described above in detail, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention described in the claims. Modifications (H01) to (H05) of the present invention are illustrated below. (H01) In the above embodiment, a configuration was exemplified in which image display and detection for the attention function test were centrally processed on the tablet terminal 7, but it is also possible to configure each of the means 72 to 76 to perform processing in a distributed manner on a server, computer device, etc. connected to a network.

[0030] (H02) In the above embodiment, it is preferable to detect hand movements because it allows inspection from multiple viewpoints, but this is not limiting. It is also possible to configure the system not to detect hand movements. Conversely, it is also possible to increase other indices, and for example, it is also possible to configure the system to additionally detect information such as heart rate and pulse rate. (H03) In the above embodiment, the tablet terminal 7 is used to carry out the test, storage, and display. However, the present invention is not limited to this. For example, the terminal (test terminal) for carrying out the attention function test and the terminal (display terminal) for displaying the results may be separate terminals, and the test results may be transmitted from the test terminal to the server 1 and stored in the server 1, while the display terminal may display the information distributed from the server 1. Therefore, it is possible to display the results on a display (display terminal) that is larger than the tablet terminal 7, which is the test terminal. Also, it is possible to display the image of the tablet terminal 7 on a large screen display during the execution of the attention function test, so that a person other than the subject, such as a doctor, can check and view the image in real time.

[0031] (H04) In the above embodiment, the configuration in which the movement of a person's hand is detected by the camera 7b equipped with the wide-angle lens 9 is exemplified, but the present invention is not limited to this. For example, it is also possible to install an infrared sensor to detect the temperature (heat) of the person's hand and detect the movement of the person's hand. (H05) In the above embodiment, a configuration was exemplified for performing a dynamic attention function test in which each time a letter is selected, the next letter is displayed in a discrete position in sequence, but this is not limited to this, and it is also possible to perform a static test similar to conventional TMT. [Explanation of symbols]

[0032] 7a...Screen, 8a...Contact part, 70...control unit, 71...inspection image display means, 72...contact position detection means, 73...pressure detection means, 74... line of sight detection means, 75...motion detection means, 76...Memory means, 77...Result display means, S...Attention function test support system.

Claims

1. a test image display means for displaying an image for testing attention function on a screen in which a plurality of test characters are discretely arranged; a touch position detection means for detecting a position at which a touch unit for inputting to select any one of the characters on the image touches the screen; a pressure detection means for detecting a pressure with which the contact portion contacts the screen; a gaze detection means for detecting a position on the image where a subject is looking based on the gaze of the subject taking the attention function test; a storage means for storing a detection result of the contact position detection means, a detection result of the pressure detection means, and a detection result of the line of sight detection means in accordance with the passage of time; a result display means for displaying the position of the contact part, the pressure, and the viewing position on the screen in chronological order based on the information stored in the storage means; An attention function test support system comprising:

2. A motion detection means for detecting a motion of a hand of a subject; the storage means for storing the detection result of the motion detection means over time; the result display means for displaying on the screen the position of the contact part, the pressure, the viewing position, and the hand movement in chronological order based on the information stored in the storage means; 2. The attention function test support system according to claim 1, further comprising:

3. A terminal having the screen; An imaging means built into the terminal; an extension means for extending an angle of view of the imaging means; the motion detection means for detecting a motion of the subject's hand based on an image capturing result by the image capturing means; 3. The attention function test support system according to claim 2, further comprising:

4. the test image display means for displaying some of the test characters on the screen based on a display order given to each of the test characters, and when an input is made to select a displayed character, making the inputted character non-displayable and displaying the test character that is next in the display order on the screen; 2. The attention function test support system according to claim 1, further comprising:

5. Computer, a test image display means for displaying an image for the attention function test on a screen in which a plurality of test characters are discretely arranged; a contact position detection means for detecting a position at which a contact portion for inputting to select any one of the characters on the image comes into contact with the screen; a pressure detection means for detecting a pressure with which the contact portion contacts the screen; a gaze detection means for detecting a position on the image where a subject is looking based on the gaze of the subject taking the attention function test; a storage means for storing the detection result of the contact position detection means, the detection result of the pressure detection means, and the detection result of the line of sight detection means in accordance with the passage of time; a result display means for displaying on the screen the position of the contact part, the pressure, and the viewing position in chronological order based on the information stored in the storage means; This is an attention function test support program to function as a

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