Brain activity measurement system and task presentation device

Abstract

To provide a brain activity measurement system that enables a place where a task presentation device is arranged to be easily secured, the task presentation device presenting a task for measuring a cognitive function of a brain of a subject to the subject, and provide the task presentation device.SOLUTION: A brain activity measurement system 100 includes: a brain activity measurement part 1; a brain activity measurement control part 2 that controls the brain activity measurement part 1; a task presentation device 4 that presents a task for measuring an activity state of a cognitive function of a brain of a subject by the brain activity measurement part by using a stimulation for a part of the body of the subject; an input reception part 3; and a display part 3 that displays information on measurement of the activity state of the brain of the subject Su. The task presentation device 4 includes an attachment and detachment mechanism 45 that is detachably attached to an end part Tb1 of a top plate Tb of a desk T arranged with at least one of the brain activity measurement control part 2, the input reception part 3, and the display part 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a brain activity measurement system and a task presentation device.

Background Art

[0002] Conventionally, a brain activity measurement system and a task presentation device have been known (see, for example, Patent Document 1).

[0003] In the above Patent Document 1, a tactile stimulus presentation device (task presentation device) is disclosed. This tactile stimulus presentation device includes a contact member and a drive mechanism. The contact member is a member that contacts the palm of a subject and gives a stimulus. The drive mechanism is configured to move the contact member in the X direction and the Y direction that are orthogonal to each other in the horizontal direction. The drive mechanism is configured to move the contact member in the Z direction, which is the vertical direction. The tactile stimulus presentation device is configured to cause a predetermined character or symbol or the like to be written on the contact member on the palm of the subject by moving the contact member in each of the X direction, the Y direction, and the Z direction by the drive mechanism. Thereby, a task for diagnosing the cognitive function of the brain of the subject is presented to the subject by the tactile stimulus presentation device.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Although not explicitly stated in Patent Document 1, when presenting a subject with a task to diagnose the cognitive function of their brain, not only a tactile stimulus presentation device is used, but also a measurement unit for measuring brain activity, a control device for controlling the measurement unit, and an input receiving unit for the subject to input answers such as predetermined characters or symbols written on their palm using a contact member. Also, although not explicitly stated in Patent Document 1, generally, the measurement unit is attached to the subject, while the tactile stimulus presentation device, control device, and input receiving unit are placed on the tabletop. In this case, because the control device and input receiving unit are placed on the tabletop, it becomes difficult to secure a place to place the tactile stimulus presentation device on the tabletop. Therefore, it is desirable to easily secure a place to place the tactile stimulus presentation device (task presentation device) that presents a subject with a task to diagnose (measure) the cognitive function of their brain.

[0006] This invention was made to solve the above-mentioned problems, and one objective of this invention is to provide a brain activity measurement system and a task presentation device that can easily secure a place to set up a task presentation device that presents a subject with a task for measuring the cognitive function of the subject's brain. [Means for solving the problem]

[0007] To achieve the above objective, the brain activity measurement system in the first aspect of this invention comprises a brain activity measurement unit for measuring the activity state of cognitive functions in a subject's brain; a brain activity measurement control unit for controlling the brain activity measurement unit; a task presentation device for presenting a task for measuring the activity state of cognitive functions in the subject's brain by stimulating a part of the subject's body; an input receiving unit for receiving input from the subject's response to the task presented by the task presentation device; and a display unit for displaying information related to the measurement of the subject's brain activity state. The task presentation device includes a detachable mechanism that is detachably attached to the edge of the tabletop of a desk on which at least one of the brain activity measurement control unit, the input receiving unit, and the display unit is located.

[0008] Furthermore, the task presentation device in the second aspect of this invention comprises a task presentation main unit that presents a task for measuring the cognitive activity state of the subject's brain by stimulating a part of the subject's body using a brain activity measurement unit that measures the cognitive activity state of the subject's brain, and a detachable mechanism for detachably attaching the task presentation main unit to the edge of the tabletop of a desk. [Effects of the Invention]

[0009] In the brain activity measurement system in the first phase described above, and the task presentation device in the second phase described above, the task presentation device includes a detachable mechanism that is detachably attached to the edge of the tabletop of a desk on which at least one of the brain activity measurement control unit, input receiving unit, and display unit is placed. As a result, even when it is difficult to secure a place to place the task presentation device on the tabletop due to the placement of the control unit and input receiving unit on the tabletop, the task presentation device does not need to be placed on the tabletop by attaching it to the edge of the tabletop using the detachable mechanism. Consequently, a place to place the task presentation device, which presents a task to the subject for measuring the cognitive function of the subject's brain, can be easily secured. [Brief explanation of the drawing]

[0010] [Figure 1] This is a schematic diagram showing the overall brain activity measurement system of the first embodiment. [Figure 2] This is a block diagram showing the control unit for measuring brain activity in the brain activity measurement system of the first embodiment. [Figure 3] This is a block diagram showing the control device for the brain activity measurement system of the first embodiment. [Figure 4] This is a schematic diagram showing a task presentation device for a brain activity measurement system according to the first embodiment. [Figure 5] This is a perspective view showing the task presentation device of the brain activity measurement system according to the first embodiment attached to the edge of a desk surface. [Figure 6] This is a side view of the task presentation device of the brain activity measurement system according to the first embodiment. [Figure 7] It is a side view of the task presentation device of the brain activity measurement system according to the first embodiment, as seen from the machine side. [Figure 8] It is an exploded perspective view showing the state where the plate-like member and the first sheet member of the task presentation device of the brain activity measurement system according to the first embodiment are removed. [Figure 9] It is a cross-sectional view taken along the line X-X of FIG. 6. [Figure 10] It is a schematic diagram showing the whole of the brain activity measurement system according to the second embodiment. [Figure 11] It is a side view showing the support rod of the task presentation device of the brain activity measurement system according to the second embodiment. [Figure 12] It is a schematic diagram showing the whole of the brain activity measurement system of the reference example. [Figure 13] It is a side view showing the support rod of the task presentation device of the brain activity measurement system of the reference example.

Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments embodying the present invention will be described based on the drawings.

[0012] [[ID=,30]] [First Embodiment] First, referring to FIGS. 1 to 9, the configuration of the brain activity measurement system 100 according to the embodiment of the present invention will be described.

[0013] As shown in FIG. 1, the brain activity measurement system 100 is a system for measuring the activity state of the brain of the subject Su when presenting a task for performing calculations and character recognition to the subject Su. The brain activity measurement system 100 is configured to make the subject Su recognize the activity state of the cognitive function of the brain by showing the measurement result of the activity state of the brain to the subject Su.

[0014] Specifically, the brain activity measurement system 100 includes an optical measurement unit 1, a control unit 2 for brain activity measurement, a control device 3, and a task presentation device 4. The optical measurement unit 1 is an example of the "brain activity measurement unit" in the claims.

[0015] (Optical measurement unit and control unit for brain activity measurement) As shown in FIGS. 1 and 2, the optical measurement unit 1 and the control unit 2 for brain activity measurement constitute an optical measurement device that optically measures changes in the amount of hemoglobin corresponding to blood flow changes in the brain based on near-infrared spectroscopy (NIRS; near-infrared spectroscopy). Each of the optical measurement unit 1 and the control unit 2 for brain activity measurement will be described below.

[0016] 〈Optical measurement unit〉 The optical measurement unit 1 is configured to measure the activity state of the cognitive function of the subject Su's brain with respect to the task presented by the task presentation device 4. Specifically, the optical measurement unit 1 includes a plurality of measurement probes 11 for light transmission, a plurality of measurement probes 12 for light reception, a plurality of optical fibers 13, and a holder 14.

[0017] Each of the plurality of measurement probes 11 for light transmission is configured to irradiate the head of the subject Su with measurement light that is near-infrared light. Each of the plurality of measurement probes 12 for light reception is configured to receive the measurement light that has passed through the head of the subject Su. Thereby, the brain activity of the subject Su is measured. The plurality of optical fibers 13 has a plurality of optical fibers 13a provided corresponding to each of the plurality of measurement probes 11 for light transmission and a plurality of optical fibers 13b provided corresponding to each of the plurality of measurement probes 12 for light reception. The optical fiber 13a connects the measurement probe 11 for light transmission and the control unit 2 for brain activity measurement. The optical fiber 13b connects the measurement probe 12 for light reception and the control unit 2 for brain activity measurement. The holder 14 is a member for fixing the plurality of measurement probes 11 for light transmission and the plurality of measurement probes 12 for light reception at a predetermined position on the head surface of the subject Su.

[0018] 〈Control unit for brain activity measurement〉 The brain activity measurement control unit 2 is configured to control the optical measurement unit 1. Here, the brain activity measurement control unit 2 is provided integrally with the task presentation device 4. That is, the brain activity measurement control unit 2 is housed in the first part 431 of the housing 43 of the task presentation device 4, which will be described later.

[0019] Specifically, the brain activity measurement control unit 2 comprises an optical output device 21, a photodetector 22, a probe control unit 23, a main unit control unit 24, a memory unit 25, and a communication unit 26.

[0020] The optical output unit 21 is configured to output measurement light emitted from the transmitting measurement probe 11 via the optical fiber 13a. The photodetector 22 is configured to detect measurement light incident on the receiving measurement probe 12 via the optical fiber 13b. The probe control unit 23 is configured to control the optical output unit 21 and the photodetector 22 based on measurement parameters acquired from the main unit control unit 24 via the communication unit 26. This controls the timing of the optical output unit 21 turning on and off, and acquires the signal of the measurement light received by the photodetector 22.

[0021] The main control unit 24 includes a CPU (Central Processing Unit) and memory. The storage unit 25 contains a non-volatile storage medium such as memory. The storage unit 25 stores various programs for measuring brain activity using the optical measurement unit 1. The communication unit 26 is a device for communicating with the control device 3 by wire or wireless. The main control unit 24 is configured to control the measurement of brain activity using the optical measurement unit 1 based on the various programs stored in the storage unit 25.

[0022] (Control device) As shown in Figure 3, the control device 3 is configured to transmit trigger signals, measurement parameters, and control parameters to the brain activity measurement control unit 2 and the task presentation device 4 via the communication unit 34 when measuring the cognitive function activity state of the subject Su's brain. The control device 3 is a portable computer. Specifically, the control device 3 has a control unit 31, a storage unit 32, a display unit 33, and a communication unit 34. The display unit 33 is an example of the "operation reception unit" and "display unit" in the claims.

[0023] The control unit 31 includes a CPU and memory, etc. The storage unit 32 includes a non-volatile storage medium such as an HDD (Hard Disk Drive) or SSD (Solid State Drive).

[0024] The display unit 33 is a touch panel display. Thus, the display unit 33 is configured to receive input from subject Su regarding the task presented by the task presentation device 4. The display unit 33 is also configured to display information related to the measurement of subject Su's brain activity. This information includes the measurement procedure, the operation method of the equipment necessary for measurement, and the measurement results of the change in hemoglobin levels corresponding to changes in blood flow in the brain, acquired by the optical measurement unit 1 and the brain activity measurement control unit 2. The measurement results may also be displayed on the display unit of subject Su's mobile device.

[0025] The communication unit 34 is a device for communicating with the brain activity measurement control unit 2 and the task presentation device 4, respectively, by wire or wireless connection. This allows the control unit 3 to send and receive information necessary for measuring the brain activity state of subject Su to and from the brain activity measurement control unit 2 and the task presentation device 4.

[0026] (Task presentation device) As shown in Figure 4, the task presentation device 4 is configured to present a task for measuring the cognitive activity state of subject Su's brain by stimulating subject Su's palm using the optical measurement unit 1. Subject Su's palm is an example of "part of the subject's body" and "part of the subject's hand" in the claims.

[0027] The task presentation device 4 includes a control unit 41, a storage unit 42, a housing 43, a stimulus application mechanism 44, a detachable mechanism 45 (see Figure 5), a closure member 46 (see Figure 5), and a communication unit 47. Here, the housing 43 has a first part 431 and a second part 432 (see Figure 5) which are integrally provided. The combined configuration of the control unit 41, storage unit 42, housing 43, and stimulus application mechanism 44 is an example of the "task presentation main body" as defined in the claims.

[0028] Here, the vertical direction is defined as the Z direction, the upward direction as the Z1 direction, and the downward direction as the Z2 direction. The horizontal direction in which the first part 431 of the housing 43 and the attachment / detachment mechanism 45 are aligned is defined as the X direction, the X direction on the attachment / detachment mechanism 45 side is defined as the X1 direction, and the X direction on the first part 431 side of the housing 43 is defined as the X2 direction. The horizontal direction perpendicular to the X direction is defined as the Y direction, one direction of the Y direction is defined as the Y1 direction, and the other direction of the Y direction is defined as the Y2 direction.

[0029] Specifically, the control unit 41 includes a CPU and memory, etc. The storage unit 42 includes a non-volatile storage medium such as memory. The storage unit 42 stores a program for controlling the stimulation mechanism 44. The control unit 41 is configured to control the stimulation mechanism 44 based on the program stored in the storage unit 42.

[0030] <Cabinet> As described above, the housing 43 has a first part 431 and a second part 432 (see Figure 5) which are integrally provided. However, the structure of the housing 43 is not limited to a structure in which the first part 431 and the second part 432 (see Figure 5) are integrated. Here, the first part 431, which is part of the housing 43, is configured to house the brain activity measurement control unit 2, the control unit 41, the memory unit 42, and the stimulation application mechanism 44.

[0031] Specifically, as shown in Figure 5, the first portion 431 has a plate-like member 431a, a side plate portion 431b, a lower plate portion 431c, and an upper plate portion 431d. Here, the plate-like member 431a and the upper plate portion 431d each constitute the upper surface of the first portion 431. The side plate portion 431b constitutes the surface of the first portion 431 on the X1 direction side. The lower plate portion 431c constitutes the lower surface of the first portion 431 on the Z2 direction side. Furthermore, the plate-like member 431a, the side plate portion 431b, the lower plate portion 431c, and the upper plate portion 431d are each formed in a plate shape.

[0032] The plate-shaped member 431a is detachably attached to the upper plate portion 431d. Specifically, the plate-shaped member 431a has fitting holes 4311a that fit into projections protruding from the upper plate portion 431d in the Z1 direction. Multiple fitting holes 4311a are formed to match the number of projections.

[0033] Furthermore, the plate-shaped member 431a is the member on which the palm of subject Su rests when the task is presented by stimulating the palm of subject Su. The plate-shaped member 431a has an upper surface 4312a on which a stimulation area Ar is provided to stimulate the palm of subject Su. The upper surface 4312a is the surface of the plate-shaped member 431a on the Z1 direction side. The plate-shaped member 431a has an opening 4313a (see Figure 6) formed in the portion corresponding to the stimulation area Ar. The opening 4313a penetrates the plate-shaped member 431a in the Z direction. The opening 4313a communicates with the opening 4311d of the upper plate portion 431d, which will be described later. Note that the opening 4311d is an example of the "first opening" in the claims. Also, the opening 4313a is an example of the "second opening" in the claims.

[0034] The side panel portion 431b constitutes the surface facing the top panel Tb in the X direction, among the multiple (four) side panel portions arranged horizontally in the first portion 431. In other words, the side panel portion 431b constitutes the surface of the first portion 431 provided on the X1 direction side. Furthermore, the second portion 432, which is part of the housing 43, is integrally provided on the side panel portion 431b.

[0035] The lower plate portion 431c constitutes the surface of the first portion 431 located on the Z2 direction side of the first portion 431. The upper plate portion 431d constitutes the surface of the first portion 431 located on the Z1 direction side of the first portion 431. In the upper plate portion 431d, an opening 4311d (see Figure 6) is formed in the portion corresponding to the stimulation region Ar in the Z direction. The opening 4311d penetrates the upper plate portion 431d in the Z direction.

[0036] <Stimulation mechanism> As shown in Figure 4, the stimulation mechanism 44 is configured to stimulate the palm of subject Su in the stimulation area Ar. Specifically, the stimulation mechanism 44 includes an X-axis movement mechanism 44a, a Y-axis movement mechanism 44b, a Z-axis movement mechanism 44c, and a contact member 44d (see Figure 6).

[0037] The X-axis movement mechanism 44a has a mechanism for moving the Y-axis movement mechanism 44b in the X1 direction or the X2 direction. The X-axis movement mechanism 44a has, for example, a motor and a linear movement mechanism. The Y-axis movement mechanism 44b has a mechanism for moving the Z-axis movement mechanism 44c in the Y1 direction or the Y2 direction. The Y-axis movement mechanism 44b has, for example, a motor and a linear movement mechanism. The Z-axis movement mechanism 44c has a mechanism for moving the contact member 44d in the Z1 direction or the Z2 direction. The Z-axis movement mechanism 44c has, for example, a motor and a lifting movement mechanism.

[0038] Hereinafter, an example of the mounting of the X-axis moving mechanism 44a, the Y-axis moving mechanism 44b, the Z-axis moving mechanism 44c, and the contact member 44d is shown below. Specifically, for example, the X-axis moving mechanism 44a is fixed to the inner surface of the lower plate portion 431c of the first portion 431. The Y-axis moving mechanism 44b is movably mounted, for example, to the portion of the X-axis moving mechanism 44a on the Z1 direction side. The Z-axis moving mechanism 44c is movably mounted, for example, to the portion of the Y-axis moving mechanism 44b on the Z1 direction side. The contact member 44d is movably mounted, for example, to the portion of the Z-axis moving mechanism 44c on the Z1 direction side.

[0039] As shown in Figure 6, the contact member 44d is configured to move while protruding through the openings 4313a and 4311d, thereby pressing against and stimulating (tactile stimulation) the palm of subject Su that covers the opening 4311d. The contact member 44d is a protruding member that presses against and stimulates the palm of subject Su. The end of the protruding contact member 44d on the Z1 direction side indirectly contacts the palm of subject Su via the closing member 46, thereby pressing against the palm of subject Su. When the contact member 44d presses against the palm of subject Su, it is configured to elastically displace up and down in accordance with the contours of subject Su's palm.

[0040] Thus, the contact member 44d is configured to write a predetermined character or symbol on the palm of subject Su by controlling the X-axis movement mechanism 44a, the Y-axis movement mechanism 44b, and the Z-axis movement mechanism 44c, respectively, via the control unit 41.

[0041] <Detachable mechanism> As shown in Figures 6 and 7, the task presentation device 4 of the first embodiment includes a detachable mechanism 45 that can be detachably attached to the end Tb1 of the tabletop Tb of a desk T, so that it can be easily installed not only in medical facilities such as hospitals and research institutes, but also in facilities such as sports gyms and elderly care facilities. Here, the end Tb1 of the tabletop Tb of the desk T is a concept that includes not only the edge of the tabletop Tb of the desk T, but also the vicinity of the edge of the tabletop Tb of the desk T. As an example, it is assumed that a control device 3 is placed on the tabletop Tb of the desk T (see Figure 1).

[0042] The attachment / detachment mechanism 45 is configured to be attached to the end Tb1 of the top plate Tb by clamping the end Tb1 of the top plate Tb, and to be removed from the end Tb1 of the top plate Tb by releasing the clamping on the end Tb1 of the top plate Tb.

[0043] Specifically, the attachment / detachment mechanism 45 has a pair of upper contact portions 45a, a pair of mounting portions 45b, and a plurality (2) of adjustment portions 45c. Each of the plurality (2) of adjustment portions 45c is an example of the "lower contact portion" in the claims.

[0044] The pair of upper contact portions 45a are plate-shaped members that contact the surface Ts1 of the top plate Tb from the Z1 direction side. The pair of upper contact portions 45a are fixed to the Z1 direction end of the side plate portion 431b. With respect to the height position of the Z2 direction end of the first portion 431, the height position of each of the pair of upper contact portions 45a in the Z direction is the same at height position Hm. Each of the pair of upper contact portions 45a is positioned Z1 direction side of the pair of mounting portions 45b. Each of the pair of upper contact portions 45a protrudes from the side plate portion 431b toward the X1 direction. The pair of upper contact portions 45a are opposite each other in the Y direction. The upper contact portion 45a on the Y1 direction side of the pair of upper contact portions 45a is fixed to the portion of the side plate portion 431b on the Y1 direction side of the second portion 432. The upper contact portion 45a on the Y1 direction side faces the mounting portion 45b on the Y1 direction side of the pair of mounting portions 45b in the Z direction. The upper contact portion 45a on the Y2 direction side of the pair of upper contact portions 45a is fixed to the portion of the side plate portion 431b on the Y2 direction side of the second portion 432. The upper contact portion 45a on the Y2 direction side faces the mounting portion 45b on the Y2 direction side of the pair of mounting portions 45b in the Z direction.

[0045] Each of the pair of mounting portions 45b is a plate-shaped member to which an adjustment portion 45c is movably attached. Each of the pair of mounting portions 45b is provided with a female thread for movably attaching the adjustment portion 45c. The pair of mounting portions 45b are fixed to the Z2 direction side of the pair of upper contact portions 45a of the side plate portion 431b. The height position of each of the pair of mounting portions 45b in the Z direction is the same, with respect to the height position of the Z2 direction end of the first portion 431. Each of the pair of mounting portions 45b protrudes from the side plate portion 431b toward the X1 direction. The pair of mounting portions 45b face each other in the Y direction. The mounting portion 45b on the Y1 direction side of the pair of mounting portions 45b is fixed to the portion of the side plate portion 431b toward the Y1 direction side of the second portion 432. Of the pair of mounting portions 45b, the mounting portion 45b on the Y2 direction side is fixed to the portion of the side plate portion 431b on the Y2 direction side of the second portion 432.

[0046] Each of the multiple adjustment parts 45c is a screw member that contacts the underside Ts2 of the top plate Tb from the Z2 direction side. Each of the multiple adjustment parts 45c is mounted on the mounting part 45b so as to be movable in the Z direction. The adjustment part 45c on the Y1 direction side of the multiple adjustment parts 45c is mounted so as to be movable on the mounting part 45b on the Y1 direction side of the pair of mounting parts 45b. The adjustment part 45c on the Y2 direction side of the multiple adjustment parts 45c is mounted so as to be movable on the mounting part 45b on the Y2 direction side of the pair of mounting parts 45b. In this way, each of the multiple adjustment parts 45c is provided below the upper contact part 45a on the Z2 direction side.

[0047] Here, each of the multiple adjustment parts 45c has a knob, a bolt, and a pad as threaded components. The knob is the part that is rotated by the user. The knob is positioned on the Z2 side of the mounting part 45b. The bolt is screwed into each of the pair of mounting parts 45b. As a result, the bolt rotates with the rotation of the knob, moving relative to the mounting part 45b in either the Z1 or Z2 direction. The pad is a component that contacts the underside Ts2 of the top plate Tb. The pad is positioned on the Z1 side of the mounting part 45b.

[0048] The attachment / detachment mechanism 45, having the configuration described above, is configured to clamp the end portion Tb1 of the tabletop Tb by narrowing the width W in the Z direction between the upper contact portion 45a and the adjustment portion 45c. Specifically, by narrowing the width W by rotating the adjustment portion 45c to one side, the end portion Tb1 of the tabletop Tb is clamped between the pad of the adjustment portion 45c and the upper contact portion 45a. This allows the task presentation device 4 to be attached to the end portion Tb1 of the tabletop Tb of the desk T. Conversely, by widening the width W by rotating the adjustment portion 45c to the other side, the clamping between the pad of the adjustment portion 45c and the upper contact portion 45a of the end portion Tb1 of the tabletop Tb is released. This allows the task presentation device 4 to be detached from the end portion Tb1 of the tabletop Tb of the desk T. This operation is performed for each of the multiple adjustment portions 45c.

[0049] <Height position of the task presentation device> As shown in Figures 6 and 7, the height position Hc of the upper surface 4312a on which the stimulus area Ar of the task presentation device 4 is provided is approximately the same as the height position Ht of the surface Ts1 of the top plate Tb, with respect to the height position of the end on the Z2 direction side of the first part 431 of the housing 43. Here, "approximately the same" is a broad concept that includes cases where the height positions Hc and Ht are the same, where the height position Hc is slightly higher than the height position Ht, or where the height position Hc is slightly lower than the height position Ht.

[0050] Specifically, the height position Hc of the upper surface 4312a on which the stimulus area Ar of the task presentation device 4 is provided is slightly above the height position Ht of the surface Ts1 of the top plate Tb, with reference to the height position of the Z2-direction end of the first part 431 of the housing 43. The height position Hc is located in the Z1 direction from the height position Ht by the Z-direction thickness of the upper contact portion 45a, which is a plate-shaped member, and the Z-direction thickness of the plate-shaped member 431a. Here, the height position Hm of the Z1-direction end of the upper contact portion 45a, which is a plate-shaped member, is at the same position as the Z2-direction end of the plate-shaped member 431a, with reference to the height position of the Z2-direction end of the first part 431 of the housing 43. The height position of the end of the plate-shaped upper contact portion 45a on the Z2 direction is the same as the height position Ht of the surface Ts1 of the top plate Tb, with reference to the height position of the end of the first portion 431 of the housing 43 on the Z2 direction.

[0051] <Blocking component> As shown in Figures 8 and 9, the closing member 46 blocks the contact member 44d in the first portion 431 from being touched through the openings 4313a and 4311d. Specifically, the closing member 46 has a first sheet member 46a and a second sheet member 46b. Here, each of the first sheet member 46a and the second sheet member 46b has a larger area in the horizontal direction than the opening 4313a (opening 4311d). Note that in Figure 9, the thickness in the Z direction is increased to make the first sheet member 46a and the second sheet member 46b easier to see.

[0052] The first sheet member 46a is formed of a gel material. The first sheet member 46a is a sheet thinner than the thickness of the plate-shaped member 431a in the Z direction. Furthermore, the first sheet member 46a has elasticity and frictional resistance to the extent that it does not hinder the movement of the contact member 44d when writing predetermined characters or symbols on the palm of subject Su. In other words, the first sheet member 46a is configured to expand and contract in accordance with the movement of the contact member 44d.

[0053] The first sheet member 46a has chemical resistance to alcohol. This makes it possible to suppress deterioration of the first sheet member 46a even if the manager wipes the first sheet member 46a with alcohol. The first sheet member 46a is formed of a material (the gel material described above) that does not allow moisture such as alcohol to penetrate.

[0054] The first sheet member 46a is positioned between the upper plate portion 431d and the plate-like member 431a in the Z direction. The first sheet member 46a is attached to the first portion 431. Specifically, the first sheet member 46a is sandwiched between the upper plate portion 431d and the plate-like member 431a. That is, the first sheet member 46a is sandwiched between the upper plate portion 431d and the plate-like member 431a in the Z direction. Specifically, the first sheet member 46a is sandwiched between the portion surrounding the opening 4311d of the upper plate portion 431d and the bottom surface on the Z1 direction side of the recess 4314a near the opening 4313a of the plate-like member 431a. The first sheet member 46a is detachably attached to the upper plate portion 431d. In other words, by removing the plate-shaped member 431a, the administrator can take out the first sheet member 46a, and thus the administrator can replace the first sheet member 46a.

[0055] As shown in Figures 8 and 9, the second sheet member 46b is formed to be the same as the first sheet member 46a in terms of material and dimensions. That is, the second sheet member 46b is made of gel material. The second sheet member 46b is a sheet that is thinner than the thickness of the plate-shaped member 431a in the Z direction. Furthermore, the second sheet member 46b has elasticity and frictional resistance to the extent that it does not hinder the movement of the contact member 44d when writing predetermined characters or symbols on the palm of subject Su. That is, the second sheet member 46b is configured to expand and contract in accordance with the movement of the contact member 44d.

[0056] The second sheet member 46b is attached to the first portion 431. The second sheet member 46b is attached to the lower surface (the surface on the Z2 direction side) of the upper plate portion 431d. Specifically, the second sheet member 46b is sandwiched between the upper plate portion 431d and the mounting plate 51 in the Z direction. Here, the mounting plate 51 is fastened by a plurality of screws 52 inserted into the first portion 431 from the Z1 direction side via the upper plate portion 431d, and is positioned in the space inside the first portion 431 on the Z2 direction side of the upper plate portion 431d. The mounting plate 51 has an opening 51a that has the same position and area as the horizontal position and area of ​​the openings 4313a and 4311d. As a result, the second sheet member 46b is sandwiched between the portion of the upper plate portion 431d surrounding the opening 4311d and the portion of the mounting plate 51 surrounding the opening 51a. When writing a predetermined character or symbol on the palm of subject Su, a contact member 44d is inserted into the opening 51a.

[0057] <Communications Department> The communication unit 47 (see Figure 4) is a device for communicating with the control unit 3 via wired or wireless means. This allows the task presentation device 4 to send and receive information necessary for measuring the brain activity state of subject Su to and from the control unit 3.

[0058] (Effects of the first embodiment) In the first embodiment, the following effects can be obtained.

[0059] In the first embodiment, as described above, the brain activity measurement system 100 includes an optical measurement unit 1 that measures the activity state of cognitive functions in the brain of subject Su, and a brain activity measurement control unit 2 that controls the optical measurement unit 1. The brain activity measurement system 100 includes a task presentation device 4 that presents a task for measuring the activity state of cognitive functions in the brain of subject Su by subject Su through stimulation of the palm of subject Su using the optical measurement unit 1. The brain activity measurement system 100 includes a control device 3 that receives input from subject Su's response to the task presented by the task presentation device 4 and displays information related to the measurement of subject Su's brain activity state. The task presentation device 4 includes a detachable mechanism 45 that is detachably attached to the end Tb1 of the tabletop Tb of the desk T on which the control device 3 is located. As a result, even if it is difficult to secure a place to place the task presentation device 4 on the tabletop Tb of the desk T due to the placement of the control device 3 and other components on the tabletop Tb of the desk T, the task presentation device 4 does not need to be placed on the tabletop Tb by attaching the task presentation device 4 to the edge Tb1 of the tabletop Tb of the desk T using the attachment / detachment mechanism 45. As a result, it is possible to easily secure a place to place the task presentation device 4 that presents tasks to subject Su for measuring the cognitive function of the subject Su's brain.

[0060] Furthermore, in the first embodiment, as described above, the task presentation device 4 includes a housing 43 having an upper surface 4312a on which a stimulation area Ar is provided to stimulate the palm of the subject Su. The height position Hc of the upper surface 4312a on which the stimulation area Ar of the task presentation device 4 is provided is approximately the same as the height position Ht of the surface Ts1 of the top plate Tb. As a result, from a state in which the subject Su has placed their hand on the surface Ts1 of the top plate Tb, the subject Su can place their palm on the stimulation area Ar without raising their palm excessively, thereby suppressing an increase in the movement burden on the subject Su during the diagnosis of cognitive function.

[0061] Furthermore, in the first embodiment, as described above, the attachment / detachment mechanism 45 is configured to be attached to the end Tb1 of the top plate Tb by clamping the end Tb1 of the top plate Tb, and to be removed from the end Tb1 of the top plate Tb by releasing the clamping of the end Tb1 of the top plate Tb. As a result, the task presentation device 4 can be attached to and detached from the end Tb1 of the top plate Tb simply by clamping and releasing the clamping of the attachment / detachment mechanism 45, making it relatively easy to attach and detach the task presentation device 4 to the end Tb1 of the top plate Tb.

[0062] Furthermore, in the first embodiment, as described above, the attachment / detachment mechanism 45 has an upper contact portion 45a that contacts the surface Ts1 of the top plate Tb from above, and an adjustment portion 45c that is provided below the upper contact portion 45a and contacts the back surface Ts2 of the top plate Tb from below. The attachment / detachment mechanism 45 grips the end portion Tb1 of the top plate Tb by narrowing the vertical width W between the upper contact portion 45a and the adjustment portion 45c. As a result, the structure of the attachment / detachment mechanism 45 can be realized with a simple structure, and thus the complexity of the structure of the task presentation device 4 can be suppressed.

[0063] Furthermore, in the first embodiment, as described above, the brain activity measurement control unit 2 is housed within the housing 43. This reduces the amount of components that need to be placed on the tabletop Tb of the desk T, thereby saving space on the tabletop Tb of the desk T.

[0064] Furthermore, in the first embodiment, as described above, the task presentation device 4 includes a stimulus application mechanism 44 that provides stimulation to the palm of subject Su in the stimulation area Ar. As a result, the task can be presented by the stimulation provided to the palm of subject Su by the stimulus application mechanism 44, and the brain activity measurement system 100 can measure the activity state of cognitive functions of the brain through tactile stimulation.

[0065] Furthermore, in the first embodiment, as described above, the optical measurement unit 1 and the brain activity measurement control unit 2 constitute an optical measurement device. This allows the optical measurement device to optically measure changes in the cognitive function activity state of the brain based on near-infrared spectroscopy (NIRS). As a result, since it is less susceptible to disturbances caused by electromagnetic waves, the brain activity state can be measured not only in medical facilities such as hospitals but also in various general facilities.

[0066] Furthermore, in the first embodiment, as described above, the housing 43 has openings 4313a and 4311d formed in the portion corresponding to the stimulation area Ar. The stimulation application mechanism 44 is housed within the housing 43 and has a contact member 44d that moves in a protruding state through the openings 4313a and 4311d, thereby pressing against the palm through the openings 4313a and 4311d to provide stimulation. As a result, the contact member 44d can be used to present the subject Su with a cognitive function task of the brain, such as writing letters or symbols.

[0067] Furthermore, in the first embodiment, as described above, the task presentation device 4 includes a closing member 46 that is attached to the housing 43 and blocks the contact member 44d inside the housing 43 from being touched through the openings 4313a and 4311d. As a result, since the closing member 46 is attached to the housing 43, the closing member 46 does not move compared to the case where the closing member 46 moves along with the movement of the contact member 44d, so the dimensions of the closing member 46 required to close the openings 4313a and 4311d can be reduced. As a result, it is possible to suppress the enlargement of the housing 43 to which the closing member 46 is attached. In addition, the closing member 46 prevents the subject Su from directly touching the contact member 44d.

[0068] Furthermore, in the first embodiment, as described above, the housing 43 has an upper plate portion 431d with an opening 4311d formed thereon, and a plate-like member 431a having an upper surface 4312a, mounted on the upper plate portion 431d, and having an opening 4313a that communicates with the opening 4311d. The closing member 46 is positioned between the upper plate portion 431d and the plate-like member 431a and has a first sheet member 46a that can expand and contract in accordance with the movement of the contact member 44d. As a result, the openings 4313a and 4311d can be closed without hindering the movement of the contact member 44d, thereby suppressing the reduction in the ability to write letters or symbols on the palm of the subject Su by the contact member 44d due to the first sheet member 46a.

[0069] Furthermore, in the first embodiment, as described above, the first sheet member 46a is sandwiched between the upper plate portion 431d and the plate-shaped member 431a. This prevents a gap from forming between the upper plate portion 431d and the plate-shaped member 431a, thereby suppressing the intrusion of liquids and dust into the housing 43. In addition, since no special screws or other parts are used to attach the first sheet member 46a, the number of parts in the task presentation device 4 can be kept from increasing.

[0070] Furthermore, in the first embodiment, as described above, the plate-shaped member 431a and the first sheet member 46a are each detachably attached to the upper plate portion 431d. The closing member 46 is attached to the lower surface of the upper plate portion 431d and has a second sheet member 46b that can expand and contract in accordance with the movement of the contact member 44d. As a result, even after the first sheet member 46a is removed, the openings 4311d and 4313a can be closed by the second sheet member 46b, making it more difficult for liquids and dust to enter the housing 43.

[0071] Furthermore, in the first embodiment, as described above, the first sheet member 46a has chemical resistance. As a result, even when the first sheet member 46a is wiped with alcohol, the first sheet member 46a can be prevented from deteriorating, and the first sheet member 46a can be kept clean.

[0072] Furthermore, in the first embodiment, as described above, the task presentation device 4 includes a task presentation main unit that presents a task for measuring the cognitive activity state of the subject Su's brain by stimulating the subject Su's palm, using an optical measurement unit 1 that measures the cognitive activity state of the subject Su's brain. The task presentation device 4 includes a detachable mechanism 45 that detachably attaches the task presentation main unit to the end Tb1 of the tabletop Tb of the desk T. As a result, even when it is difficult to secure a place to place the task presentation device 4 on the tabletop Tb of the desk T due to the placement of the control device 3 and the like on the tabletop Tb of the desk T, the task presentation device 4 does not need to be placed on the tabletop Tb by attaching the task presentation device 4 to the end Tb1 of the tabletop Tb of the desk T using the detachable mechanism 45. Therefore, a task presentation device 4 is provided that makes it easy to secure a place to place the task presentation device 4 that presents the task for measuring the cognitive activity state of the subject Su's brain to the subject Su.

[0073] [Second Embodiment] Referring to Figures 10 and 11, the configuration of the brain activity measurement system 200 according to the second embodiment of the present invention will be described. In the second embodiment, unlike the first embodiment, the task presentation device 204 is supported by a detachable mechanism 45 and a support rod 248. In the second embodiment, detailed descriptions of the same configuration as in the first embodiment will be omitted.

[0074] As shown in Figures 10 and 11, the brain activity measurement system 200 according to the second embodiment of the present invention is a system for measuring the brain activity state of subject Su when subject Su is presented with tasks such as calculation and character recognition.

[0075] Specifically, the brain activity measurement system 200 comprises an optical measurement unit 1, a brain activity measurement control unit 2, a control device 3, and a task presentation device 204. The optical measurement unit 1 is an example of the "brain activity measurement unit" in the claims.

[0076] (Task presentation device) The task presentation device 204 is configured to present a task for measuring the cognitive activity state of the subject Su's brain by stimulating the subject Su's palm using the optical measurement unit 1. The subject Su's palm is an example of "part of the subject's body" and "part of the subject's hand" in the claims.

[0077] The task presentation device 204 includes a control unit 41, a storage unit 42, a housing 43, a stimulus application mechanism 44, a detachable mechanism 45 (see Figure 11), a closure member 46 (see Figure 5), a communication unit 47 (see Figure 4), and a support rod 248 (see Figure 11). The combined configuration of the control unit 41, storage unit 42, housing 43, and stimulus application mechanism 44 is an example of the "task presentation main body" in the claims. The support rod 248 is an example of the "support part" in the claims.

[0078] Here, the vertical direction is defined as the Z direction, the upward direction as the Z1 direction, and the downward direction as the Z2 direction. One of the horizontal directions is defined as the X direction, one of the X directions as the X1 direction, and the other X direction as the X2 direction. The horizontal direction perpendicular to the X direction is defined as the Y direction, one of the Y directions as the Y1 direction, and the other Y direction as the Y2 direction.

[0079] <Support part> As shown in Figure 11, the support rod 248 is configured to support the task presentation device 4 not only with the attachment / detachment mechanism 45 but also with the ground surface Fr (for example, the floor) in order to stably attach the task presentation device 204 to the end Tb1 of the top plate Tb. The support rod 248 is a rod-shaped member. Specifically, the support rod 248 has a large-diameter member 248a, a small-diameter member 248b, and a ground contact portion 248c. The ground contact portion 248c is an example of the "lower end portion" in the claims.

[0080] Each of the large-diameter member 248a and the small-diameter member 248b has a cylindrical shape. In the direction perpendicular to the Z direction, the inner diameter of the large-diameter member 248a is larger than the outer diameter of the small-diameter member 248b. The Z1-side end of the large-diameter member 248a abuts against the Z2-side end of the task presentation device 204. The small-diameter member 248b is attached to the Z2-side portion of the large-diameter member 248a so as to be movable relative to the large-diameter member 248a in the Z1 or Z2 direction. This makes the support rod 248 adjustable in length in the Z direction. That is, by rotating the small-diameter member 248b to one side, the small-diameter member 248b moves to the Z2-side and extends beyond the large-diameter member 248a, and the Z-direction length of the support rod 248 increases. Furthermore, by rotating the small-diameter member 248b to the other side, the small-diameter member 248b is housed within the large-diameter member 248a, and the length of the support rod 248 in the Z direction is reduced.

[0081] The ground contact portion 248c is a cushioning member attached to the Z2-direction end of the small-diameter member 248b. The Z2-direction end of the ground contact portion 248c is configured to abut against the ground contact surface Fr. The support rod 248 supports the task presentation device 204 with the ground contact portion 248c in contact with the ground contact surface Fr.

[0082] Multiple (four) such support rods 248 are provided for the task presentation device 204. Specifically, each of the multiple (two) support rods 248 supports the first part 431 of the housing 43 with its grounding portion 248c in contact with the grounding surface Fr. Each of the multiple (two) support rods 248 supports the second part 432 of the housing 43 with its grounding portion 248c in contact with the grounding surface Fr. Note that two, three, five or more support rods 248 may be arranged, or only one may be arranged. Furthermore, the other configurations of the second embodiment are the same as those of the first embodiment, so their description will be omitted.

[0083] (Effects of the second embodiment) In the second embodiment, the brain activity measurement system 200 includes an optical measurement unit 1 that measures the cognitive activity state of the subject Su's brain, and a brain activity measurement control unit 2 that controls the optical measurement unit 1. The brain activity measurement system 200 includes a task presentation device 204 that presents a task for measuring the cognitive activity state of the subject Su's brain by stimulating the subject Su's palm using the optical measurement unit 1. The brain activity measurement system 200 includes a control device 3 that receives input from the subject Su's response to the task presented by the task presentation device 204 and displays information related to the measurement of the subject Su's brain activity state. The task presentation device 204 includes a detachable mechanism 45 that is detachably attached to the edge Tb1 of the tabletop Tb of the desk T on which the control device 3 is placed. This makes it easy to secure a place to place the task presentation device 204 that presents the task for measuring the cognitive activity state of the subject Su's brain to the subject Su.

[0084] Furthermore, in the second embodiment, as described above, the brain activity measurement system 200 has an upper end that contacts the task presentation device 204 and a ground contact portion 248c that contacts the ground contact surface Fr, and is equipped with a support rod 248 (support portion) that supports the task presentation device 204 with the ground contact portion 248c in contact with the ground contact surface Fr. As a result, the task presentation device 204 can be supported from the ground contact surface Fr not only by the attachment / detachment mechanism 45 but also by the support rod 248, so that the task presentation device 204 can be attached to the end portion Tb1 of the top plate Tb in a stable state.

[0085] Furthermore, in the second embodiment, as described above, the support portion includes a rod-shaped support rod 248. This allows the support portion to be realized with a relatively simple structure.

[0086] Furthermore, in the second embodiment, as described above, the support rod 248 (support portion) is configured to have an adjustable vertical length. This allows the length of the support rod 248 to be adjusted according to the distance from the ground surface Fr to the lower end of the task presentation device 204, so that the task presentation device 204 can be supported using the support rod 248 in various locations.

[0087] Furthermore, in the second embodiment, as described above, multiple support rods 248 (support parts) are provided on the task presentation device 204. This allows for more stable support of the task presentation device 204. The other effects of the second embodiment are the same as those of the first embodiment.

[0088] [Reference example] Referring to Figures 12 and 13, the configuration of a reference example of the brain activity measurement system 300 according to the present invention will be described. In this reference example, unlike the first embodiment, the task presentation device 304 is supported only by a plurality of support rods 347. In this reference example, detailed explanations of the same configuration as in the first embodiment will be omitted.

[0089] As shown in Figures 12 and 13, the brain activity measurement system 300 according to a reference example of the present invention is a system for measuring the brain activity state of subject Su when subject Su is presented with tasks such as calculation and character recognition.

[0090] Specifically, the brain activity measurement system 300 comprises an optical measurement unit 1, a brain activity measurement control unit 2, a control device 3, and a task presentation device 304. The optical measurement unit 1 is an example of the "brain activity measurement unit" in the claims.

[0091] (Task presentation device) The task presentation device 304 is configured to present a task for measuring the cognitive activity state of the subject Su's brain by stimulating the subject Su's palm using the optical measurement unit 1. The subject Su's palm is an example of "part of the subject's body" and "part of the subject's hand" in the claims.

[0092] The task presentation device 304 includes a control unit 41, a storage unit 42, a housing 43, a stimulation mechanism 44, an occlusion member 46 (see Figure 5), and a plurality of support rods 347 (see Figure 13). The combined configuration of the control unit 41, storage unit 42, housing 43, and stimulation mechanism 44 is an example of the "task presentation main body" in the claims. The support rods 347 are an example of the "support part" in the claims.

[0093] Here, the vertical direction is defined as the Z direction, the upward direction as the Z1 direction, and the downward direction as the Z2 direction. One of the horizontal directions is defined as the X direction, one of the X directions as the X1 direction, and the other X direction as the X2 direction. The horizontal direction perpendicular to the X direction is defined as the Y direction, one of the Y directions as the Y1 direction, and the other Y direction as the Y2 direction.

[0094] <Support rod> As shown in Figure 13, the support rod 347 is a rod-shaped member that supports the task presentation device 304 on a contact surface Fr (for example, the floor) by being positioned near the end Tb1 of the tabletop Tb in the horizontal direction. The support rod 347 positions the task presentation device 304 opposite the end Tb1 of the tabletop Tb of the desk T. When viewed from the Z1 direction side, the support rod 347 supports the task presentation device 304 at a position where the end Tb1 of the tabletop Tb and the second portion 432 overlap.

[0095] Specifically, the support rod 347 has a large-diameter member 347a, a small-diameter member 347b, and a ground contact portion 347c. The ground contact portion 347c is an example of the "lower end portion" in the claims.

[0096] Multiple (four) such support rods 347 are provided for the task presentation device 304. That is, each of the multiple (two) support rods 347 supports the first portion 431 with its grounding portion 347c in contact with the grounding surface Fr. Each of the multiple (two) support rods 347 supports the second portion 432 with its grounding portion 347c in contact with the grounding surface Fr. Note that there may be two, three, five or more support rods 347, or just one. Furthermore, the other configurations of the reference example are the same as those of the first embodiment, so their description is omitted.

[0097] (Example effect) In the reference example, the brain activity measurement system 300 includes a support rod 347 (support part) that positions the task presentation device 304 in a position opposite the end Tb1 of the tabletop Tb of the desk T, with its lower end 46c in contact with the ground surface Fr. This makes it easy to secure a place to position the task presentation device 304, which presents a task to subject Su for measuring the cognitive function of the subject Su's brain, even when it is difficult to secure a place to place the task presentation device 304 on the tabletop Tb of the desk T, as the task presentation device 304 does not need to be placed on the tabletop Tb thanks to the support rod 347. The other effects of the reference example are the same as those of the first embodiment described above.

[0098] [Differentiation] It should be noted that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims rather than by the description of the embodiments above, and further includes all modifications (exceptions) within the meaning and scope equivalent to the claims.

[0099] For example, in the first and second embodiments described above, the "brain activity measurement unit" in the claims is shown to be an optical measurement device, but the present invention is not limited thereto. In the present invention, the brain activity measurement unit may be an electroencephalogram (EEG) measurement device.

[0100] Furthermore, while the first and second embodiments described above show examples in which the brain activity measurement control unit 2 is housed within the housing 43, the present invention is not limited thereto. In the present invention, the brain activity measurement control unit may be provided separately from the housing and placed on the tabletop of a desk or leaned against a chair. In this case, the vertical and horizontal dimensions of the housing will be reduced by the amount of the brain activity measurement control unit.

[0101] Furthermore, while the first and second embodiments described above show examples in which the control device 3 is placed on the tabletop Tb of the desk T, the present invention is not limited to this. In the present invention, it is sufficient that at least one of the following is placed on the tabletop of the desk: a brain activity measurement control unit, an input reception unit, and a display unit.

[0102] Furthermore, while the first and second embodiments described above show examples in which the control device 3 integrally possesses the functions of the "input receiving unit" and "display unit" as defined in the claims, the present invention is not limited thereto. In the present invention, the input receiving unit and the display unit may be provided separately.

[0103] Furthermore, while the first and second embodiments described above show examples in which the first sheet member 46a and the second sheet member 46b are each formed from a gel material, the present invention is not limited thereto. In the present invention, the first sheet member and the second sheet member may each be formed from a thin resin sheet.

[0104] Furthermore, while the first and second embodiments described above show examples in which the first sheet member 46a has chemical resistance, the present invention is not limited thereto. In the present invention, the first sheet member does not have to have chemical resistance. In this case, the first sheet member may be a disposable sheet member.

[0105] Furthermore, while the first and second embodiments described above show examples in which the second sheet member 46b is formed to be the same as the first sheet member 46a in terms of material and dimensions, the present invention is not limited thereto. In the present invention, the second sheet member may be different from the first sheet member in terms of material and dimensions.

[0106] Furthermore, in the first and second embodiments described above, the closing member 46 was shown to have a second sheet member 46b attached to the lower surface of the upper plate portion 431d and which is expandable and contractible in accordance with the movement of the contact member 44d, but the present invention is not limited thereto. In the present invention, the closing member may have an openable and closable shutter mechanism instead of the second sheet member.

[0107] Furthermore, while the first and second embodiments described above show an example in which the stimulation mechanism 44 provides tactile stimulation to the palm of the hand using a contact member 44d, the present invention is not limited to this. In the present invention, the stimulation mechanism may provide warmth, coldness, or pressure to a part of the hand, such as the fingertips.

[0108] Furthermore, in the first and second embodiments described above, the optical measurement unit 1 was shown to include a plurality of light-transmitting measurement probes 11, a plurality of light-receiving measurement probes 12, a plurality of optical fibers 13, and a holder 14, but the present invention is not limited thereto. In the present invention, the optical measurement unit may include a plurality of light-transmitting measurement probes, a plurality of light-receiving measurement probes, a plurality of optical fibers, a holder, an optical output unit, a photodetector, a probe control unit, and a battery.

[0109] Furthermore, in the first embodiment described above, an example was shown in which each of the multiple adjustment parts 45c has a knob, a bolt, and a pad as a screw member, but the present invention is not limited thereto. In the present invention, the adjustment part may be a spring member that biases an attachment part provided on the housing so as to be movable in the vertical direction in an upward direction.

[0110] [Aspect] Those skilled in the art will understand that the exemplary embodiments described above are specific examples of the following embodiments.

[0111] (Item 1) Brain activity measurement unit 1 measures the cognitive function activity state of the subject Su's brain, A brain activity measurement control unit 2 controls the brain activity measurement unit 1, The brain activity measurement unit 1 presents a task to subject Su by stimulating a part of subject Su's body, and the task presentation device 4 (204) presents a task to subject Su for measuring the cognitive function activity state of the subject Su's brain. An input receiving unit 3 receives input from the subject Su's response to the task presented by the task presentation device 4, The system includes a display unit 3 that displays information related to the measurement of the brain activity state of the subject Su, The brain activity measurement system 100 includes a task presentation device 4(204) which includes a detachable mechanism 45 that is detachably attached to the edge Tb1 of the tabletop Tb of a desk T on which at least one of the brain activity measurement control unit 2, the input receiving unit 3, and the display unit 3 is located.

[0112] (Item 2) The task presentation device 4(204) includes a housing 43 having an upper surface 4312a on which a stimulation area Ar is provided for stimulating a part of the subject Su's body, The brain activity measurement system 100 described in item 1, wherein the height position Hc of the upper surface 4312a on which the stimulation area Ar of the task presentation device 4(204) is provided is approximately the same as the height position Ht of the surface Ts1 of the top plate Tb.

[0113] (Item 3) The brain activity measurement system 100 according to item 1, wherein the attachment / detachment mechanism 45 is configured to be attached to the end Tb1 of the top plate Tb by clamping the end Tb1 of the top plate Tb, and to be removed from the end Tb1 of the top plate Tb by releasing the clamping of the end Tb1 of the top plate Tb.

[0114] (Item 4) The aforementioned attachment / detachment mechanism 45 is An upper contact portion 45a that contacts the surface of the top plate Tb from above, It has a lower contact portion 45c which is provided below the upper contact portion 45a and contacts the back surface Ts2 of the top plate Tb from below, The detachable mechanism 45 grips the end portion Tb1 of the top plate Tb by narrowing the vertical width W between the upper contact portion 45a and the lower contact portion 45c, as described in item 3, for the brain activity measurement system 100.

[0115] (Item 5) The brain activity measurement system 100 according to item 1, further comprising a support portion having an upper end portion that abuts against the task presentation device 204 and a lower end portion 248c that abuts against the ground surface Fr, wherein the lower end portion 248c is in contact with the ground surface Fr and the support portion supports the task presentation device 204.

[0116] (Item 6) The support portion is the brain activity measurement system 100 described in item 5, which includes a rod-shaped support rod 248.

[0117] (Item 7) The support portion is configured to be adjustable in length in the vertical direction, as described in item 5, for the brain activity measurement system 100.

[0118] (Item 8) The brain activity measurement system 100 described in item 5 is provided with multiple support units attached to the task presentation device 204.

[0119] (Item 9) The brain activity measurement control unit 2 is housed within the housing 43 and is part of the brain activity measurement system 100 described in item 2.

[0120] (Item 10) The brain activity measurement system 100 according to item 2, wherein the task presentation device 4(204) further includes a stimulation application mechanism 44 that provides stimulation to a part of the hand as part of the body of the subject Su in the stimulation area Ar.

[0121] (Item 11) The brain activity measurement unit 1 and the brain activity measurement control unit 2 constitute an optical measurement device, comprising the brain activity measurement system 100 described in item 1.

[0122] (Item 12) The housing 43 has openings 4313a and 4311d formed in the portion corresponding to the stimulation region Ar. The brain activity measurement system 100 according to item 10, wherein the stimulation mechanism 44 is housed within the housing 43 and has a contact member 44d that moves in a state of protrusion through the openings 4313a and 4311d, thereby pressing and stimulating a part of the hand covering the openings 4313a and 4311d.

[0123] (Item 13) The brain activity measurement system 100 according to item 12, wherein the task presentation device 4(204) further includes an occlusion member 46 attached to the housing 43, which blocks the contact member 44d inside the housing 43 from being touched through the openings 4313a, 4311d.

[0124] (Item 14) The aforementioned housing 43 is The upper plate portion 431d, in which the first opening 4311d is formed as the openings 4313a and 4311d, The plate-shaped member 431a has the upper surface 4312a, is attached to the upper plate portion 431d, and has a second opening 4313a formed as the openings 4313a, 4311d that communicate with the first opening 4311d, The occlusion member 46 is positioned between the upper plate portion 431d and the plate-shaped member 431a and has a first sheet member 46a that can expand and contract in accordance with the movement of the contact member 44d, as described in item 13, for the brain activity measurement system 100.

[0125] (Item 15) The brain activity measurement system 100 described in item 14, wherein the first sheet member 46a is sandwiched between the upper plate portion 431d and the plate-shaped member 431a.

[0126] (Item 16) Each of the plate-shaped member 431a and the first sheet member 46a is detachably attached to the upper plate portion 431d. The brain activity measurement system 100 according to item 14, wherein the occlusion member 46 further has a second sheet member 46b attached to the lower surface of the upper plate portion 431d and which is expandable and contractible in accordance with the movement of the contact member 44d.

[0127] (Item 17) The brain activity measurement system 100 described in item 14, wherein the first sheet member 46a has chemical resistance.

[0128] (Item 18) A brain activity measurement unit 1 measures the cognitive activity state of the brain of subject Su, and a task presentation unit presents a task for measuring the cognitive activity state of the brain of subject Su by stimulating a part of subject Su's body, A task presentation device 4(204) is provided with a detachable mechanism 45 for detachably attaching the task presentation main body to the end Tb1 of the tabletop Tb of a desk T. [Explanation of symbols]

[0129] 1. Optical Measurement Unit (Brain Activity Measurement Unit) 2. Control unit for measuring brain activity 3. Control device (display unit, input receiving unit) 4, 204, 304 Task Presentation Device 41 Control Unit (Task Presentation Control Unit) 43 cabinets 431a Plate-shaped member 431d Upper plate section 44. Stimulation mechanism 44d Contact member 45 Detachable mechanism 45a Upper contact part 45c Adjustment part (lower contact part) 46 Closure member 46a First sheet member 46b Second sheet member 100, 200, 300 Brain Activity Measurement System 248, 347 Support rod (support part) 248c, 347c Grounding part (lower end) 4311d Aperture (1st aperture) 4312a top side 4313a opening (second opening) Ar stimulation area Fr ground plane Hc Height position Height position Su subject T desk Tb tabletop Tb1 end Ts1 surface Ts2 Reverse Side

Claims

1. A brain activity measurement unit that measures the cognitive function activity state of the subject's brain, A brain activity measurement control unit that controls the brain activity measurement unit, A task presentation device that presents a task for measuring the cognitive function activity state of the subject's brain by stimulating a part of the subject's body, using the brain activity measurement unit, An input receiving unit that receives input from the subject's response to the task presented by the task presentation device, The system includes a display unit that displays information related to measuring the brain activity state of the subject, The task presentation device includes a detachable mechanism that is detachably attached to the edge of the tabletop of a desk on which at least one of the brain activity measurement control unit, the input receiving unit, and the display unit is located.

2. The task presentation device includes a housing having an upper surface provided with a stimulation area for stimulating a part of the subject's body, The brain activity measurement system according to claim 1, wherein the height position of the upper surface on which the stimulation area of ​​the task presentation device is provided is substantially the same as the height position of the surface of the top plate.

3. The brain activity measurement system according to claim 1, wherein the attachment / detachment mechanism is configured to be attached to the end of the top plate by clamping the end of the top plate, and to be removed from the end of the top plate by releasing the clamping on the end of the top plate.

4. The aforementioned attachment / detachment mechanism is An upper contact portion that contacts the surface of the top plate from above, It has a lower contact portion that is located below the upper contact portion and contacts the underside of the top plate from below, The brain activity measurement system according to claim 3, wherein the attachment / detachment mechanism grips the edge of the top plate by narrowing the vertical width between the upper contact portion and the lower contact portion.

5. The brain activity measurement system according to claim 1, further comprising a support portion having an upper end portion that contacts the task presentation device and a lower end portion that contacts the ground surface, wherein the lower end portion is in contact with the ground surface and the support portion supports the task presentation device.

6. The brain activity measurement system according to claim 5, wherein the support portion includes a rod-shaped support rod.

7. The brain activity measurement system according to claim 5, wherein the support portion is configured to be adjustable in length in the vertical direction.

8. The brain activity measurement system according to claim 5, wherein a plurality of support units are provided with respect to the task presentation device.

9. The brain activity measurement system according to claim 2, wherein the brain activity measurement control unit is housed within the housing.

10. The brain activity measurement system according to claim 2, wherein the task presentation device further includes a stimulation application mechanism that provides stimulation to a part of the subject's hand as part of the subject's body in the stimulation area.

11. The brain activity measurement system according to claim 1, wherein the brain activity measurement unit and the brain activity measurement control unit constitute an optical measurement device.

12. The housing has an opening formed in the portion corresponding to the stimulation area, The brain activity measurement system according to claim 10, wherein the stimulation mechanism has a contact member housed within the housing that moves in a state of protruding through the opening, thereby pressing and stimulating a part of the hand covering the opening.

13. The brain activity measurement system according to claim 12, further comprising a task presentation device attached to the housing and a closure member that prevents the contact member inside the housing from being touched through the opening.

14. The aforementioned enclosure is The upper plate portion having the first opening as the aforementioned opening, It has the above-mentioned upper surface, is attached to the upper plate portion, and has a plate-like member having a second opening which is the opening that communicates with the first opening, The brain activity measurement system according to claim 13, wherein the occlusion member is disposed between the upper plate portion and the plate-shaped member and has a first sheet member that can expand and contract in accordance with the movement of the contact member.

15. The brain activity measurement system according to claim 14, wherein the first sheet member is sandwiched between the upper plate portion and the plate-shaped member.

16. Each of the plate-shaped member and the first sheet member is detachably attached to the upper plate portion. The brain activity measurement system according to claim 14, wherein the occlusion member further comprises a second sheet member attached to the lower surface of the upper plate portion and which is expandable and contractible in accordance with the movement of the contact member.

17. The brain activity measurement system according to claim 14, wherein the first sheet member has chemical resistance.

18. A brain activity measurement unit measures the cognitive activity state of the subject's brain, and a task presentation unit presents a task for measuring the cognitive activity state of the subject's brain by stimulating a part of the subject's body. A task presentation device comprising a detachable mechanism for detachably attaching the task presentation main body to the edge of a desk tabletop.

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