Spatial Cognition Function Evaluation and Analysis System, Evaluation and Analysis Device, and Program Thereof

Abstract

To provide an evaluation analysis system capable of separating, non-search perception ability and search perception ability for evaluating superiority of the same, for a same patient.SOLUTION: An evaluation analysis system 10 is a system for evaluating and analyzing for a visual space perception failure patient, non-search perception ability as of when an upper half body is fixed and search perception ability as of when an upper half body is fixed. The evaluation analysis system comprises: a detection unit 13 for detecting a rotation angle at a rotation part of a patient; and a processing unit 14 for determining an index value related to the non-search perception ability and the search perception ability. The processing unit 14 comprises: perception space identification means 16 identifying the perception space; and negligible symptom analysis means 17 for analyzing a negligible symptom. The negligible symptom analysis means 17 comprises: a size index calculation part 20 for calculating an index related to a size of the perception space; an angle index calculation part 21 for calculating an index value based on a rotation angle when recognizing an object at a prescribed position; and a symptom grasping part 22 for grasping the non-search perception ability and search perception ability of the patient, on the basis of the index values.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an evaluation analysis system, an evaluation analysis device, and a program thereof for evaluating and analyzing the ability required to recognize an object present in front of a patient having a visuospatial cognitive disorder such as a patient with hemispatial neglect, by comparing with a healthy person, and proposing a rehabilitation policy.

Background Art

[0002] As one of the higher brain function disorders caused by cerebrovascular disorders, there is a visuospatial cognitive disorder called hemispatial neglect that ignores stimuli present on the opposite side of the brain lesion. For example, a patient with hemispatial neglect due to right brain injury ignores objects present in the left space of their visuospatial field, collides with the left side of the door when passing through the door, cannot read the left side of printed materials, and does not notice the side dishes on the left during meals, etc. Such symptoms of hemispatial neglect are said to include neglect in the proximal space near the patient (proximal spatial neglect), neglect in the distal space at a distance (distal spatial neglect), and neglect in both of these spaces.

[0003] For patients with hemispatial neglect, various rehabilitations will be carried out to expand their visual fields. In such rehabilitations, it is necessary to grasp the spatial neglect state (neglect symptoms) of each patient. Therefore, conventionally, as an examination for grasping the state of hemispatial neglect, an examination called the Behavioral Inattention Test (BIT) has been performed. In the BIT, a test paper with various diagrams is placed in front of the patient, and the patient is asked to answer the parts that can be recognized through vision, so as to evaluate the state of hemispatial neglect in the patient. However, the BIT is a desk test using paper, and it can only evaluate the planar and limited proximal spatial neglect at a certain distance from the patient, and cannot evaluate the neglect in the entire three-dimensional space including the distal space. Therefore, in the examination by the BIT, it is unclear in which range the neglect area that cannot be recognized in the visual space in front of the patient occurs. For this reason, the rehabilitation for the patient has to be carried out intuitively, and the rehabilitation for reducing the neglect area cannot be effectively carried out. Also, according to medical findings such as neuropsychology, since the responsible areas of the brain center are different in the proximal space and the distal space, a three-dimensional neglect evaluation specialized for each of the proximal space and the distal space is required.

[0004] Therefore, the present inventors have already proposed a visual cognitive function evaluation system that can quantitatively grasp the neglect area in the patient's visual space three-dimensionally (see Patent Document 1). In this system, an index value for quantitatively evaluating the cognitive state in the patient's visual space is calculated. As the index value, a cognitive ratio that is an index related to the non-exploratory cognitive ability of the patient and an exploration ratio that is an index related to the exploratory cognitive ability of the patient are obtained. Here, the non-exploratory cognitive ability means the ability to recognize an object in the visual space when the upper body of the patient is fixed with the joints of the upper body fixed, and the exploratory cognitive ability means the ability to recognize the object when the upper body is not fixed with the upper body non-fixed as above.

[0005] The recognition ratio is the ratio of the patient's recognition angle to the recognition angle (120 degrees) of a healthy person, based on the response results regarding the recognition of an object (pseudo-object) presented in front of the patient's eyes when the upper body is fixed. Note that this recognition angle means the angular range within which an object existing in the visual space where human vision acts can be recognized.

[0006] The exploration ratio is obtained from the response results regarding the recognition of the object when the upper body is not fixed, and is the ratio of the following required exploration angle to the movement recognition angle. The required exploration angle is the angle representing how many degrees of rotation angle related to the rotational movement is required under the non-exploratory recognition ability of the patient when the upper body is fixed, in order to ensure a recognition range equivalent to that of a healthy person when the upper body is not fixed, that is, to enable spatial recognition within an angular range of 180 degrees from the front side of the head to both left and right sides. Also, the movement recognition angle is the angular difference between the respective recognition angles when the upper body is fixed and when the upper body is not fixed as described above.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] In the current object recognition over a wide range, the aforementioned non-exploratory cognitive ability and exploratory cognitive ability are appropriately used in combination according to the location of the object. However, in the system of Patent Document 1, for the same patient, it is impossible to judge the superiority or inferiority of the non-exploratory cognitive ability and the exploratory cognitive ability, and it is also impossible to compare the exploratory cognitive abilities among patients. That is, the recognition ratio in the said system is the ratio of the angle of the visual field that a patient can recognize to the angle of the visual field that a healthy person can recognize with respect to the angle of the visual field that can be recognized when the upper body is fixed. On the other hand, the exploration ratio is the ratio of how much angle can be covered by the exploratory movement with respect to the angle of the upper body that the patient needs to rotate when trying to recognize the end space on the ignored side during the exploratory movement of the patient. That is, the recognition ratio is an ability value based on a healthy person, and the exploration ratio is an ability value based on the amount of effort required by the patient. Since their reference standards are different from each other, it is impossible to evaluate the superiority or inferiority between the non-exploratory cognitive ability and the exploratory cognitive ability by comparing them. Also, regarding the exploration ratio, the recognition angle when the patient's own upper body is fixed is included in the parameters, which depends on the patient's non-exploratory cognitive ability, and it is impossible to simply compare it with other patients only for the exploratory cognitive ability.

[0009] An object of the present invention is to provide a spatial cognitive function evaluation analysis system, an evaluation analysis device, and a program thereof that can separate the non-exploratory cognitive ability and the exploratory cognitive ability for the same patient, evaluate their superiority or inferiority, and contribute to rehabilitation intervention according to the state of each of these abilities.

Means for Solving the Problem

[0010] To achieve the above object, the present invention mainly provides an evaluation and analysis system for spatial cognitive function that evaluates and analyzes, for patients with neglect symptoms due to visuospatial cognitive impairment, the non-exploratory cognitive ability, which is the ability to recognize an object in the visuospatial when the upper body is fixed with the joints of the upper body fixed, and the exploratory cognitive ability, which is the ability to recognize the object when the upper body is not fixed with the joints of the upper body not fixed. The system includes a processing device for obtaining index values related to the non-exploratory cognitive ability and the exploratory cognitive ability. The processing device includes a cognitive space specifying means for specifying a cognitive space, which is an area in the three-dimensional space in front of the patient where the patient can recognize the object, and a neglect symptom analyzing means for analyzing the neglect symptoms. In the cognitive space specifying means, the non-exploratory cognitive space, which is the cognitive space of the patient when the upper body is fixed, and the exploratory cognitive space, which is the cognitive space of the patient when the upper body is not fixed, are separately identified. The neglect symptom analyzing means includes a size index calculating unit for calculating an index value corresponding to the size of the cognitive space. In the size index calculating unit, the volumes and / or the areas of a predetermined cross-section of the non-exploratory cognitive space and the exploratory cognitive space are respectively calculated to quantify the non-exploratory cognitive ability and the exploratory cognitive ability.

Advantages of the Invention

[0011] According to the present invention, for the non-exploratory cognitive ability and the exploratory cognitive ability, evaluation and analysis are respectively performed using indexes based on healthy individuals to propose a rehabilitation plan for the patient. Therefore, for the same patient, it is possible to separate the evaluation of the non-exploratory cognitive ability and the exploratory cognitive ability, determine the superiority and inferiority of these abilities, and also compare the exploratory cognitive abilities of different patients. In addition, as an evaluation of the exploratory cognitive ability, it is possible to compare the rotational movements with healthy individuals for each predetermined one or more rotational positions. As a result, it is possible to more clearly identify the rotational positions and training plans for improving the exploratory cognitive ability.

Brief Description of the Drawings

[0012] [Figure 1]It is a block diagram showing the schematic configuration of an evaluation analysis system for a spatial recognition function according to this embodiment. [Diagram 2] It is a flowchart for explaining the processing procedure in the symptom neglect grasping unit. [Figure 3] It is a graph for explaining a two-dimensional stage classification consisting of non-exploratory cognitive ability and exploratory cognitive ability. [Figure 4] (A) and (B) are diagrams of examples for explaining the process of specifying the training location and proposing the training policy of the exploratory cognitive ability.

Mode for Carrying Out the Invention

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0014] FIG. 1 shows a block diagram representing the schematic configuration of an evaluation analysis system for a spatial recognition function according to this embodiment. In this figure, the evaluation analysis system 10 is a system for evaluating and analyzing, for a patient having a hemispatial neglect symptom due to visuospatial cognitive impairment, the non-exploratory cognitive ability, which is the ability to recognize an object in the visual space when the upper body is fixed with the joints of the upper body fixed, and the exploratory cognitive ability, which is the ability to recognize the object when the upper body is not fixed with the joints of the upper body not fixed, and for proposing a rehabilitation policy for the patient.

[0015] This evaluation analysis system 10 includes an input device 11 for an input person such as a patient who is a subject or a therapist accompanying the patient to input various information into the system, a display device 12 capable of three-dimensionally presenting a patient with a three-dimensional test image including a predetermined object (pseudo object) that serves as a visual stimulus for the patient, a detection device 13 for detecting each rotation angle at a plurality of rotation locations when the patient performs a rotation motion related to the exploratory cognitive ability, and a processing device 14 connected to the display device 12 and the detection device 13 to perform predetermined processing.

[0016] The input device 11 receives various types of information including the patient's response as to whether the patient was able to visually recognize an object within a test image presented to the patient by the display device 12, and the input information is transmitted to the processing device 14. Note that as the input device 11, as long as input and transmission of various types of information are possible, various input devices such as buttons, pedals, keyboards, touch panels, mice, etc., which can input information by physical operations of the inputter, and gaze input devices that track the movement of the gaze of a patient or the like with a camera and input information according to the movement, and the like can be adopted.

[0017] The display device 12 is a head-mounted display worn on the patient's head, and a known structure that can present a test image sent from the processing device 14 in stereoscopic vision in front of the patient's eyes is used. Note that as the display device 12, as long as a test image can be presented to the patient three-dimensionally, other devices can also be adopted.

[0018] The detection device 13 is attached to a plurality of locations on the patient's body surface portion, and includes known sensors such as a gaze measurement device, an IMU sensor, a motion capture, etc., that can measure the turning angles of these body surface portions. In this detection device 13, the turning angles of each location (turning location) of the patient that can be turned when performing a turning motion corresponding to the exploratory cognitive ability are measured respectively. In the present embodiment, the gaze and the neck, shoulders, chest, and waist as the joint portions of the upper body are used as the turning locations, and the turning angles of each turning location are detected using the angle information of each sensor in an absolute coordinate system with a predetermined spatial position as the origin.

[0019] The processing device 14 is a computer including an arithmetic processing device such as a CPU and a storage device such as a memory and a hard disk, and a program for causing the computer to function as the following respective means is installed, and it functions as an evaluation analysis device for the spatial cognition function.

[0020] This processing device 14 includes a display control means 15 that transmits a pre-stored test image to the display device 12 and controls the display state of the test image on the display device 12, a cognitive space specifying means 16 that specifies a cognitive space, which is a region in a three-dimensional space in front of the patient where the patient can recognize an object, based on the answer input by the input device 11, an inattention symptom analyzing means 17 that analyzes the inattention symptoms of the patient by comparing with a healthy person, and an output means 18 that outputs various information obtained by the cognitive space specifying means 16 and the inattention symptom analyzing means 17 to an external device, instrument and / or system.

[0021] In the display control means 15, a test image including a predetermined object is transmitted to the display device 12 so that a preset immersive three-dimensional virtual reality space (hereinafter referred to as "VR space") can be visually recognized by the patient from the first-person perspective. This object is presented to the patient so that the three-dimensional position when the patient views it stereoscopically through the display device 12 changes randomly over time. Further, this object is randomly displayed at the position of any one of a plurality of preset display points in the VR space based on a predetermined presentation rule, and after an answer regarding whether the object displayed at the position can be recognized is given, it is displayed at a display point at another different position.

[0022] In the cognitive space specifying means 16, the input result to the input device 11 regarding whether the patient can recognize an object through vision is recorded, and from this answer, the three-dimensional position information of the boundary part between the cognitive region where the patient can recognize and the inattention region where the patient cannot recognize is obtained, and the cognitive space, which is the range of the cognitive region in the three-dimensional space, and the inattention space, which is the range of the inattention region in the three-dimensional space, are identified. Here, the identification is performed respectively when the upper body is fixed (the joints of the upper body (trunk) are fixed) and when the upper body is not fixed (the joints of the upper body (trunk) are not fixed). Therefore, here, the non-exploratory cognitive space, which is the cognitive space when the patient's upper body is fixed, and the exploratory cognitive space, which is the cognitive space when the upper body is not fixed as above, are separately identified.

[0023] Note that since the specific processes in the display control means 15 and the cognitive space specifying means 16 are substantially the same as the method already proposed by the applicant (Japanese Patent Application Laid-Open No. 2020-156956), detailed description thereof will be omitted.

[0024] In the neglect symptom analysis means 17, for the non-exploratory cognitive ability which is the ability of the patient to recognize a stimulus when the upper body is fixed and the exploratory cognitive ability which is the ability of the patient to recognize a stimulus when the upper body is not fixed, index values for performing evaluations based on healthy individuals are obtained, and based on the index values, a rehabilitation intervention proposal corresponding to the patient's neglect symptom is made.

[0025] This neglect symptom analysis means 17 includes a size index calculation unit 20 that calculates an index value corresponding to the size of the cognitive space, an angle index calculation unit 21 that calculates an index value based on the turning angle at each turning point when recognizing an object at a predetermined position, and a symptom grasping unit 22 that grasps the non-exploratory cognitive ability and the exploratory cognitive ability that cause the patient's neglect symptom from these index values and proposes the training content in rehabilitation.

[0026] In the size index calculation unit 20, first, from the position data of each cognitive space specified by the cognitive space specifying means 16, the volume of the non-exploratory cognitive space, which is the cognitive space when the upper body is fixed and the patient does not perform a turning motion, and the volume of the exploratory cognitive space, which is the cognitive space when the upper body is not fixed and the patient can perform a turning motion, are obtained, and the non-exploratory cognitive ability and the exploratory cognitive ability are quantified. Next, a non-exploratory normal rate, which is an index for comparing the volume of the non-exploratory cognitive space with that of a healthy person, and an exploratory normal rate, which is an index for comparing the volume of the exploratory cognitive space with that of a healthy person, are calculated. These non-exploratory normal rate and exploratory normal rate are ratios to healthy persons obtained by dividing the volumes of the non-exploratory cognitive space and the exploratory cognitive space by the volume of the cognitive space of healthy persons acquired and stored in advance under the same conditions. In the present embodiment, the volume of each cognitive space is used as a basis. However, the present invention is not limited to this. Along with or instead of the volume basis, it is also possible to calculate the non-exploratory normal rate and the exploratory normal rate based on the area of a predetermined cross-section of each cognitive space. Examples of the cross-section include a horizontal plane at a predetermined height position.

[0027] In the angle index calculation unit 21, under the condition that an exploration operation can be performed with the upper body not fixed, the following index values are appropriately calculated using the turning angles of each turning part at the moment when an object is recognized. Each turning part here is a part detected by the detection device 13, that is, five parts including the line of sight, neck, shoulders, chest, and waist related to the turning motion for recognizing an object with the entire trunk (including the chest) without considering the movement of the lower body are targeted. Note that the data of healthy persons used here are acquired in advance under the same conditions as when acquiring the target data of the patient and stored in the processing device 14.

[0028] First, from these line-of-sight turning angle θ1, neck turning angle θ2, shoulder turning angle θ3, chest turning angle θ4, and waist turning angle θ5, an exploration compensation rate, which is the ratio of the patient's exploratory cognitive ability to that of a healthy person, is obtained. As the exploration compensation rate, as shown in the following formula, for the sum of the turning angles at a plurality of turning parts extracted by the combination described later, the total exploration compensation rate R is obtained by dividing the patient's sum by the healthy person's sum. tFor the rotation angle at each single rotation point, the search compensation rate R for each location is calculated by dividing the patient's value by the value of a healthy subject. p is calculated. R t =Σθ i / Σθ i * R p =θ n / θ n * In the above formula, the symbol with an asterisk represents the rotation angle of a healthy subject at the same rotation point as the patient. i is at least 2 or more of 1 to 5, and n is any one of 1 to 5. That is, the total search compensation rate R t is calculated and stored for all combinations of 2, 3, 4, and 5 out of the angles of each rotation point detected by the detection device 13. Also, the search compensation rate R for each location p is calculated and stored for all of the above-mentioned 5 locations or for any arbitrary rotation point.

[0029] In addition, the angle index calculation unit 21 calculates, for the target patient, the search ratio R, which is the ratio of any one location constituting the rotation location to the sum of the rotation angles at a plurality of rotation locations used when calculating the search compensation rate, as follows R and stores it. Note that either the total search compensation rate R t or the search compensation rate R for each location p can be used alone. R R =θ n / Σθ i With this search ratio R R for a certain patient, for example, in units of parts such as the whole upper body or the upper and lower parts of the upper body with the neck as the boundary, the ratio of the rotation angle at the rotation points constituting the part can be known, and this numerical value is compared with the same numerical value of a healthy subject.

[0030] In the symptom grasping unit 22, according to the procedure shown in the flowchart of FIG. 2, when intervening in the patient's rehabilitation, the training content such as the ability that should be prioritized in training and the rotation points that should be trained for improving the exploratory cognitive ability are determined.

[0031] First, from the non-exploratory normal rate and the exploratory normal rate obtained by the size index calculation unit 20, as schematically shown in the graph of FIG. 3 with these as two axes, using the respectively set threshold values A and B, two-dimensional stage classification is performed, and it is determined whether the deviation between the normal rates is large (step S101). That is, here, the non-exploratory normal rate and the exploratory normal rate are plotted on a two-dimensional coordinate, and two-dimensional stage classification is performed using the predetermined threshold values set in advance for each. For example, in the graph of FIG. 3, when the calculated non-exploratory normal rate and exploratory normal rate are located in the upper left region or the lower right region which is the hatched part in the figure, it is considered that the deviation between these normal rates is large, and training for either the non-exploratory cognitive ability or the exploratory cognitive ability corresponding to the lower value of either the non-exploratory normal rate or the exploratory normal rate, which is significantly inferior to that of healthy individuals, is proposed (step S102).

[0032] In this embodiment, for the sake of convenience of explanation, one threshold value is set for each normal rate, but the present invention is not limited to this, and a plurality of types of threshold values can be set for each, and some of the stages divided using these plurality of threshold values can be set as the range with a large deviation described above.

[0033] On the other hand, when it is determined that the deviation between the non-exploratory normal rate and the exploratory normal rate is not large, that is, when located in the upper right region or the lower left region of FIG. 3, the calculation results such as the exploration compensation rate obtained by the angle index calculation unit 21 are further used to determine the ability and rotation points that should be preferentially trained. Basically, when the exploration compensation rate is 1 or more, that is, when it is larger than that of healthy individuals, the non-exploratory cognitive ability is preferentially trained, and when the exploration compensation rate is less than 1, the exploratory cognitive ability is preferentially trained.

[0034] First, as shown in FIG. 2, it is determined whether or not the total search compensation rate R t obtained by summing all five locations of the line of sight, neck, shoulders, chest, and waist is greater than 1 (step S103). Here, even when recognizing the same position, the final direction of the line of sight may not match between a healthy person and a patient due to the function of the peripheral vision. Assuming such a case, first, the compensation status of the patient's exploratory cognitive ability including the line of sight is confirmed.

[0035] Next, when the total search compensation rate R t obtained by summing the five locations is greater than 1, it is determined whether or not the total search compensation rate R t obtained by summing the four locations excluding the line of sight is greater than 1 (step S104). Here, assuming a case where the final direction of the line of sight matches between a healthy person and a patient, further, the compensation status of the patient's exploratory cognitive ability excluding the line of sight is confirmed.

[0036] As a result, when the total search compensation rate R t obtained by summing the four locations excluding the line of sight is greater than 1, it is proposed that mainly, training of non-exploratory cognitive ability (non-exploratory training) aiming at expanding the patient's visual field when the upper body is fixed should be the main, and for the rotation locations with a low search compensation rate, training of exploratory cognitive ability (exploratory training) by rotational movement when the upper body is not fixed should be additionally performed (step S105).

[0037] On the other hand, when the total search compensation rate R t obtained by summing the five locations is 1 or less, or when the total search compensation rate R t obtained by summing the four locations is 1 or less, it is proposed that exploratory training should be performed for the rotation locations with a low search compensation rate for each part according to a predetermined classification (step S106).

[0038] In specifying the rotation locations in the above exploratory training, each index value calculated by the angle index calculation unit 21 is appropriately selected and used. Hereinafter, it will be described by way of an example shown in FIG. 4.

[0039] In the case of Fig. 4(A), from the detection values of healthy subjects and patients in the detection device 13, the local search compensation rate R at each turning location p is used to identify the turning locations that can improve the exploratory cognitive ability. In this case, the patient's eye line and neck turning movements are inferior to those of healthy subjects, and the compensatory ability due to the turning movement is low. On the other hand, the patient's chest turning movement is larger than that of healthy subjects, and the insufficient compensatory ability for healthy subjects is compensated by the chest. As a result, through the data analysis in the symptom grasping unit 22, it is proposed that, as a training guideline for the exploratory cognitive ability at the time of intervention, while paying attention not to allow compensation by the chest, improve the compensatory ability of the eye line and neck.

[0040] In the case of Fig. 4(B), when divided into the upper part, which is the part above the neck, and the lower part, which is the part below it, the total search compensation rate R t is 1.0 for each, and when the upper and lower parts are combined, the total of each is the same turning angle as that of healthy subjects. In such a case, it is proposed to train the exploratory cognitive ability at each turning location so that the turning angle of each turning location approaches that of healthy subjects while also using the search ratio R R for each.

[0041] As described above, according to the present embodiment, for a patient, it is possible to more detailedly evaluate and analyze whether there is a problem with the non-exploratory cognitive ability when the upper body is fixed, or whether there is a problem with the exploratory cognitive ability when the upper body is not fixed. It can contribute to the realization of new individualized rehabilitation, such as differentiating between rehabilitation in a state where the upper body is fixed and rehabilitation in a state where the upper body is not fixed, according to the ignored symptoms of each patient. In addition, it is possible to compare various index values among patients, and more effective rehabilitation research and exploration can be expected.

[0042] In the above embodiment, the evaluation analysis system 10 is used for visual cognitive evaluation of patients with hemispatial neglect, but the present invention is not limited to this, and it can also be applied to the evaluation analysis of symptoms and the intervention support of rehabilitation for other patients with similar cognitive impairments.

[0043] In addition, the configuration of each part of the device in the present invention is not limited to the illustrated configuration example, and various modifications are possible as long as they exhibit substantially the same function.

Description of Reference Numerals

[0044] 10 Evaluation analysis system 14 Processing device (evaluation analysis device) 16 Cognitive space specifying means 17 Ignored symptom analysis means 20 Size index calculation unit 21 Angle index calculation unit 22 Symptom grasping unit

Claims

1. A spatial cognitive function evaluation and analysis system for evaluating and analyzing, for a patient having a neglect symptom due to visuospatial cognitive impairment, a non-exploratory cognitive ability which is the ability to recognize an object in the visuospatial when the upper body is fixed with the joints of the upper body fixed, and an exploratory cognitive ability which is the ability to recognize the object when the upper body is not fixed with the joints of the upper body not fixed, comprising: a processing device for obtaining index values related to the non-exploratory cognitive ability and the exploratory cognitive ability; the processing device includes a cognitive space specifying means for specifying a cognitive space which is an area in a three-dimensional space in front of the patient's eyes where the patient can recognize the object, and a neglect symptom analyzing means for analyzing the neglect symptom; in the cognitive space specifying means, a non-exploratory cognitive space which is the cognitive space of the patient when the upper body is fixed and an exploratory cognitive space which is the cognitive space of the patient when the upper body is not fixed are separately identified; the neglect symptom analyzing means includes a size index calculating section for calculating an index value corresponding to the size of the cognitive space; in the size index calculating section, the volumes and / or the areas of a predetermined cross section of the non-exploratory cognitive space and the exploratory cognitive space are respectively calculated, a non-exploratory normal rate which is an index of the non-exploratory cognitive ability obtained by comparing the volume or the area of the non-exploratory cognitive space with that of a healthy person, and an exploratory normal rate which is an index of the exploratory cognitive ability obtained by comparing the volume or the area of the exploratory cognitive space with that of a healthy person are calculated, and the non-exploratory cognitive ability and the exploratory cognitive ability are quantified. A spatial cognitive function evaluation and analysis system characterized by this.

2. A spatial cognitive function evaluation and analysis system for evaluating and analyzing, for a patient having a neglect symptom due to visuospatial cognitive impairment, a non-exploratory cognitive ability which is the ability to recognize an object in the visuospatial when the upper body is fixed with the joints of the upper body fixed, and an exploratory cognitive ability which is the ability to recognize the object when the upper body is not fixed with the joints of the upper body not fixed, comprising: a detection device for detecting a turning angle at a turning location of the patient, and a processing device for obtaining index values related to the non-exploratory cognitive ability and the exploratory cognitive ability; the processing device includes a cognitive space specifying means for specifying a cognitive space which is an area in a three-dimensional space in front of the patient's eyes where the patient can recognize the object, and a neglect symptom analyzing means for analyzing the neglect symptom; In the cognitive space identification means, the non-exploratory cognitive space, which is the cognitive space of the patient when the upper body is fixed, and the exploratory cognitive space, which is the cognitive space of the patient when the upper body is not fixed, are separated and identified. The neglect symptom analysis means includes a size index calculation unit that calculates an index value corresponding to the size of the cognitive space, and an angle index calculation unit that calculates an index value based on the turning angle when recognizing an object at a predetermined position. In the size index calculation unit, the volumes and / or the areas of a predetermined cross-section of the non-exploratory cognitive space and the exploratory cognitive space are respectively calculated to quantify the non-exploratory cognitive ability and the exploratory cognitive ability. In the angle index calculation unit, an exploration compensation rate, which is the index value related to the exploratory cognitive ability, is obtained. As the exploration compensation rate, the ratio to a healthy person at the turning angle at a single turning location and / or the ratio to a healthy person at the total value of the respective turning angles at a plurality of turning locations are calculated. A spatial cognitive function evaluation and analysis system is characterized by this.

3. The system further includes a detection device that detects the turning angle at the turning location of the patient. The neglect symptom analysis means further includes an angle index calculation unit that calculates an index value based on the turning angle when recognizing an object at a predetermined position, and a symptom grasping unit that grasps the non-exploratory cognitive ability and the exploratory cognitive ability of the patient from the respective index values. In the angle index calculation unit, an exploration compensation rate, which is the index value related to the exploratory cognitive ability, is obtained. As the exploration compensation rate, the ratio to a healthy person at the turning angle at a single turning location and / or the ratio to a healthy person at the total value of the respective turning angles at a plurality of turning locations are calculated. In the symptom grasping unit, the non-exploratory normal rate and the exploratory normal rate are plotted on a two-dimensional coordinate, and two-dimensional stage classification is performed using predetermined threshold values set in advance for each. The spatial cognitive function evaluation and analysis system according to Claim 1 is characterized by this.

4. In the symptom grasping unit, based on the stage to which the patient belongs, training for the ability to be improved among the non-exploratory cognitive ability and the exploratory cognitive ability is proposed. The spatial cognitive function evaluation and analysis system according to Claim 3 is characterized by this.

5. In the symptom grasping unit, it is determined whether the deviation between the non-exploratory normal rate and the exploratory normal rate is large. When it is determined that the deviation is large, training for the ability corresponding to the lower one of the non-exploratory cognitive ability and the exploratory cognitive ability is proposed. On the other hand, when it is not the case, based on the exploratory compensation rate, training for the non-exploratory cognitive ability and / or the exploratory cognitive ability at a predetermined turning position is proposed. The spatial cognitive function evaluation analysis system according to claim 4, characterized in that.

6. For a patient having a neglect symptom due to visuospatial cognitive impairment, a non-exploratory cognitive ability which is the ability to recognize an object in the visuospatial when the upper body is fixed with the joints of the upper body fixed, and an exploratory cognitive ability which is the ability to recognize the object when the upper body is not fixed with the joints of the upper body not fixed. An apparatus for obtaining index values related to these abilities and evaluating and analyzing these abilities respectively, A cognitive space specifying means for specifying a cognitive space which is a region in which the patient can recognize the object in a three-dimensional space in front of the eyes of the patient, and a neglect symptom analyzing means for analyzing the neglect symptom. In the cognitive space specifying means, the non-exploratory cognitive space which is the cognitive space of the patient when the upper body is fixed and the exploratory cognitive space which is the cognitive space of the patient when the upper body is not fixed are separated and identified. The neglect symptom analyzing means includes a size index calculating unit for calculating an index value corresponding to the size of the cognitive space. In the size index calculating unit, the volume and / or the area of a predetermined cross section of the non-exploratory cognitive space and the exploratory cognitive space are calculated respectively. The non-exploratory normal rate which is an index of the non-exploratory cognitive ability obtained by comparing the volume or the area of the non-exploratory cognitive space with that of a healthy person, and the exploratory normal rate which is an index of the exploratory cognitive ability obtained by comparing the volume or the area of the exploratory cognitive space with that of a healthy person are calculated. An evaluation analysis apparatus for spatial cognitive function, characterized in that the non-exploratory cognitive ability and the exploratory cognitive ability are quantified.

7. A program for an apparatus for obtaining index values related to a non-exploratory cognitive ability which is the ability to recognize an object in the visuospatial when the upper body is fixed with the joints of the upper body fixed, and an exploratory cognitive ability which is the ability to recognize the object when the upper body is not fixed with the joints of the upper body not fixed for a patient having a neglect symptom due to visuospatial cognitive impairment, and evaluating and analyzing these abilities respectively, A cognitive space specifying means for specifying a cognitive space that is an area in which the patient can recognize the object in a three-dimensional space in front of the patient's eyes, and causing a computer to function as an inattention symptom analyzing means for analyzing the inattention symptom, In the cognitive space specifying means, a non-exploratory cognitive space that is the cognitive space of the patient when the upper body is fixed and an exploratory cognitive space that is the cognitive space of the patient when the upper body is not fixed are separated and identified, The inattention symptom analyzing means includes a size index calculating unit that calculates an index value corresponding to the size of the cognitive space, In the size index calculating unit, the volume and / or the area of a predetermined cross section of the non-exploratory cognitive space and the exploratory cognitive space are respectively calculated, and a non-exploratory normal rate that is an index of the non-exploratory cognitive ability obtained by comparing the volume or the area of the non-exploratory cognitive space with that of a healthy person, and an exploratory normal rate that is an index of the exploratory cognitive ability obtained by comparing the volume or the area of the exploratory cognitive space with that of a healthy person are calculated, and the non-exploratory cognitive ability and the exploratory cognitive ability are quantified. A program for an evaluation analysis device of a spatial cognitive function, characterized by that.

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