Brain wave measuring device

Abstract

To address such a problem that it is necessary for the conventional overnight polysomnography to set 20 or more electrodes and sensors to a subject.SOLUTION: A brain wave measuring device comprises an electrode part 10 and a device body part 20 for acquiring an electric signal from the electrode part. The electrode part includes a sheet-like horizontally long part 11 in which at least two forehead electrodes are provided side by side in a horizontal direction; a vertically long part 12 extending from the horizontally long part in the longitudinal direction and including a connecting part with the device body, at the tip; and a left arm part 13 and a right arm part 14 branching from the vertically long part to the right and left, then bendingly extending in the longitudinal direction, and respectively including electrodes for left ears and electrodes for right ears, at tips.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an electroencephalogram measuring device. [Background technology]

[0002] Conventionally, the only method to scientifically measure human sleep is the overnight polysomnography (PolySomnography). PSG is a method to measure respiratory and circulatory parameters. The device also detects sleep stages and breathing patterns during sleep based on measurement data from more than 20 electrodes and sensors, including the sleep sensor. Then, circulatory information is evaluated (a sleep diagram is created). Summary of the Invention

[0003] The present inventors have been conducting extensive research to discover new techniques for scientifically measuring human sleep. As a result, the following findings were obtained. Note that the following findings are not intended to be construed as limiting the scope of the present invention. It is intended as a starting point and is not intended to limit the invention.

[0004] In other words, PSG requires setting up more than 20 electrodes and sensors on the subject. In some cases, it took up to an hour just to set up the equipment. Since the subjects will be hospitalized for the test under supervision, this places a heavy burden on the subjects and may affect the results. In addition, the system can detect sleep stages and sleep duration based on data measured by more than 20 electrodes and sensors. Since each parameter was evaluated (creating a sleep graph), the analysis took a long time. .

[0005] The present invention has been made in consideration of the above points. The present invention aims to provide a technique that can solve at least one of the above problems.

[0006] The electroencephalogram measuring device according to the first aspect of the present invention comprises: an electrode unit; and a device body unit that acquires an electrical signal from the electrode unit; The electrode portion is a sheet-like horizontally elongated portion on which at least two forehead electrodes are provided side by side; The device body is connected to the horizontally elongated portion by a connection portion at the tip end of the device. A vertically elongated portion, The vertically long portion branches into left and right ear pieces, then bends and extends in the vertical direction, and the tip of the earpiece is provided with a left ear piece. a left arm portion and a right arm portion provided with a right ear electrode and a left ear electrode, respectively; has.

[0007] According to this aspect, the electrode portion includes a horizontally elongated portion on which the forehead electrode is provided and a vertically elongated portion extending from the horizontally elongated portion. The vertically long portion extends in the direction of the ear, and the vertically long portion branches out to the left and right, with the left ear electrode and the right ear electrode at the tip. It has a very simple and unique shape with left and right arm sections with electrodes. Therefore, it can be easily installed by a single subject in a short time, and is also low-cost and easy to use. The shape of the mask is designed to be comfortable to wear and not disturb your sleep. This allows subjects to easily use the device at home, making it possible to assess sleep patterns under everyday conditions. In addition, at least two forehead electrodes are provided integrally on the sheet-like horizontally elongated portion, and The relative positions of the electrodes are fixed, so you can adjust the position of each electrode by simply attaching the sheet-like horizontal part to the forehead. The electrodes can be placed in the same position each time. By attaching it to the left eye, it can detect eye movements in addition to brainwaves. The ear electrodes and right ear electrodes are attached behind the subject's left and right ears to record brain waves. In addition, it can detect electromyograms in the neck. Therefore, in addition to brainwaves, eye movements and This allows the device to utilize electromyographic signals from the body and neck, improving the accuracy of sleep determination.

[0008] The electroencephalogram measuring device according to the second aspect of the present invention is the electroencephalogram measuring device according to the first aspect. There was, The horizontally elongated portion is further provided with a reference electrode.

[0009] The electroencephalogram measuring device according to the third aspect of the present invention is the electroencephalogram measuring device according to the second aspect. There was, The reference electrode is provided between the left and right forehead electrodes.

[0010] According to this embodiment, at least two forehead electrodes and a reference electrode are provided in a sheet-like shape. The positional relationship between the two is fixed, so the sheet-like horizontal By simply attaching the long part to the forehead, it is possible to place each electrode in the same position every time. This makes it possible to suppress variations in the determination results caused by changes in the positional relationship between the electrodes.

[0011] The electroencephalogram measuring device according to the fourth aspect of the present invention is a device for measuring the electroencephalogram according to any one of the first to third aspects. 1. A measuring device comprising: The length between the base end of the left arm and the right arm and the horizontally elongated portion is 5 to 10 cm.

[0012] As a result of intensive research by the present inventors, it was found that, according to this embodiment, the subject does not feel pain in the ears. This can reduce the amount of noise that can be heard and more effectively prevent sleep disturbance.

[0013] The electroencephalogram measuring device according to the fifth aspect of the present invention is the electroencephalogram measuring device according to the fourth aspect. There was, The length between the base end of the left arm and the right arm and the horizontally elongated portion is 6 to 9 cm.

[0014] As a result of intensive research by the present inventors, it was found that, according to this embodiment, the subject does not feel pain in the ears. This can further reduce the risk of sleep disturbance and more effectively prevent sleep disturbance.

[0015] The electroencephalogram measuring device according to the sixth aspect of the present invention is a device for measuring the electroencephalogram according to any one of the first to fifth aspects. 1. A measuring device comprising: The length between the base end of the left arm and the right arm and the horizontally elongated portion is The length between the base end of the portion and the connecting portion is shorter than the length between the base end of the portion and the connecting portion.

[0016] The electroencephalogram measuring device according to the seventh aspect of the present invention is a device for measuring the electroencephalogram according to any one of the first to sixth aspects. 1. A measuring device comprising: It has a symmetrical shape.

[0017] The electrode part according to the eighth aspect of the present invention is An electrode unit that is detachable from a device main body of an electroencephalogram measuring device, a sheet-like horizontally elongated portion on which forehead electrodes are provided side by side; The device body is connected to the horizontally elongated portion by a connection portion at the tip end of the device. A vertically elongated portion, The longitudinal portion branches in opposite directions, and then extends in a bent or curved manner in the longitudinal direction. a left arm portion and a right arm portion each having a left ear electrode and a right ear electrode at the tip thereof, , has.

[0018] According to this aspect, the electrode portion includes a horizontally elongated portion on which the forehead electrode is provided and a vertically elongated portion extending from the horizontally elongated portion. The vertically long portion extends in the direction of the ear, and the vertically long portion branches out to the left and right, with the left ear electrode and the right ear electrode at the tip. It has a very simple and unique shape with left and right arm sections with electrodes. Therefore, it can be easily installed by a single subject in a short time, and is also low-cost and easy to use. The shape of the mask is designed to be comfortable to wear and not disturb your sleep. This allows subjects to easily use the device at home, making it possible to assess sleep patterns under everyday conditions. In addition, at least two forehead electrodes are provided on the sheet-like horizontally elongated portion, and the positions of the electrodes are different from each other. Since the relationship is fixed, you can place it in the same position every time by simply attaching the sheet-like horizontal part to your forehead. The electrodes can be placed precisely in the position of the subject's forehead. The left ear monitor is attached to the left ear, and it can detect eye movements in addition to brain waves. The right and left ear electrodes are attached behind the subject's left and right ears to record not only EEG but also Therefore, in addition to the brainwaves, eye movements and neck movements can be detected. Since electromyographic signals can be used, the accuracy of sleep determination can be improved. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of an electroencephalogram measuring device according to one embodiment. [Diagram 2] FIG. 2 is a plan view showing a schematic configuration of an electrode portion according to an embodiment. [Diagram 3] FIG. 3 is a cross-sectional view of an electrode portion according to an embodiment taken along line AA. [Figure 4] FIG. 4 is a cross-sectional view of the electrode portion according to the embodiment taken along line BB. [Diagram 5] FIG. 5 is a front view showing a state in which the electrode section according to the embodiment is attached to the head of a subject. [Figure 6] FIG. 6 is a right side view (as seen from the left side from the subject's perspective) showing a state in which an electrode section according to one embodiment is attached to the subject's head. [Figure 7]FIG. 7 is a left side view (as seen from the right side from the subject's perspective) showing a state in which an electrode section according to one embodiment is attached to the head of a subject. [Figure 8] FIG. 8 is a perspective view of an electrode section according to an embodiment attached to the head of a subject, as viewed obliquely from the front. [Figure 9] FIG. 9 is a perspective view of an electrode section according to an embodiment attached to a subject's head, as viewed obliquely from behind. [Figure 10] FIG. 10 is a block diagram showing a schematic configuration of a device main body according to one embodiment. [Figure 11] FIG. 11 is a plan view showing a schematic configuration of an electrode portion according to a first modified example. [Figure 12] FIG. 12 is a plan view showing a schematic configuration of an electrode section according to a second modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present specification, components having equivalent functions are designated by the same reference numerals, and detailed descriptions of the components having the same reference numerals are provided. The explanation will not be repeated.

[0021] FIG. 1 is a diagram showing a schematic configuration of an electroencephalogram measuring device 1 according to an embodiment.

[0022] As shown in FIG. 1, the electroencephalogram measuring device 1 includes an electrode unit 10 and a The device has a device main body 20 for acquiring the information.

[0023] This electroencephalogram measuring device 1 receives, for example, the electroencephalogram (EEG) signal from a service provider of electroencephalogram analysis. ) for a certain period (for example, one week), and the device body is used to measure brain waves over multiple nights. After storing the information in the device body 20, the information is returned to the service provider. The collected data is then uploaded to an external (e.g., cloud-based) EEG analysis system. The device main body 20 is charged by a charger (not shown). Alternatively, it may be powered by an internal battery 26 (see FIG. 10).

[0024] As shown in FIG. 1, the electrode section 10 may be detachable from the device body section 20. As shown in Figs. 5 to 9, the electrode unit 10 is a part that is attached to the head of a subject. It is easily soiled or scratched during use, but is configured to be detachable from the device body 20. Therefore, even if the electrode part 10 becomes dirty or scratched, it is possible to store only the electrode part 10. It can be easily replaced.

[0025] The electrode unit 10 is disposable (disposable) after a predetermined period (for example, one week) or number of times. In this case, the device may be of a non-disposable type (e.g., one that can be washed or (Types designed to be reused by replacing only worn parts) In this way, it is possible to lower the level of mechanical durability required for the electrode portion 10, It is possible to provide it at low cost. In addition, it is disposable and can be used for continuous measurement over multiple days. This eliminates the need for tedious maintenance work and allows subjects to use the device easily at home. become.

[0026] FIG 2 is a diagram showing a schematic configuration of the electrode unit 10. FIG 5 is a diagram showing the electrode unit 10 attached to the head of a subject. 6 is a front view showing a state in which the electrode unit 10 is attached to the head of a subject. FIG. 7 is a right side view (as seen from the left side of the subject) showing the electrode unit 10. The left side view (view from the right side of the subject) shows the state in which the device is attached to the subject's head. FIG. 8 is a perspective view of the electrode unit 10 attached to the head of a subject, as viewed obliquely from the front. FIG. 9 is a perspective view of the electrode unit 10 attached to the head of a subject, as viewed obliquely from behind. be.

[0027] As shown in FIG. 2, the electrode unit 10 has a sheet-like horizontally elongated portion 11 and a vertically elongated portion 12 extending from the horizontally elongated portion 11. The vertically elongated portion 12 extends vertically, and the vertically elongated portion 12 branches to the left and right, then bends and extends vertically. The electrode unit 10 has a left arm portion 13 and a right arm portion 14. It's fine.

[0028] At least two forehead electrodes 31 and 32 are provided side by side on the horizontally elongated portion 11. The distance between the left and right forehead electrodes 31, 32 is determined by the 10 / 20 method. The length is set so that it can be attached to the frontal poles Fp1 and Fp2 of the The sensor 11 may further include a reference electrode 35. As shown in FIG. The reference electrode 35 may be provided between the left and right forehead electrodes 31 and 32. The electrodes 31, 32 and the reference electrode 35 are attached to a mount 41 to prevent the conductive gel from drying out. The adhesive may be attached in a removable manner.

[0029] At least two forehead electrodes 31, 32 and a reference electrode 35 are arranged on a sheet-like horizontally elongated portion 1. 1 and their relative positions are fixed, so that As shown in the figure, by simply attaching the sheet-like horizontally elongated portion 11 to the subject's forehead, the electrodes 31, 32, The electrodes 31, 32, and 35 can be arranged in the same positional relationship each time. This makes it possible to suppress variations in the determination results caused by changes in the coefficient.

[0030] FIG. 3 is a diagram showing an example of a cross section of the horizontally elongated portion 11 of the electrode portion 10 taken along the line AA shown in FIG. It is.

[0031] As shown in FIG. 3, the horizontally elongated portion 11 includes a sheet-shaped electrode holder 51 and a The insulating base material 54 is laminated with the adhesive 51a therebetween, and the insulating base material 54 is laminated with the adhesive 51a. The device may have an electrode and signal conductor 55 and a conductive gel 56 laminated on the electrode 55. A mount 41 is detachably attached onto the conductive gel 56.

[0032] The electrode holding material 51 may be, for example, a nonwoven fabric or a foamed resin. In this case, the comfort of the horizontally elongated portion 11 is improved, and disturbance to sleep can be prevented. .

[0033] As shown in FIG. 2, the left and right ends of the horizontally elongated portion 11 are provided with forehead electrodes 31 and 32 and reference electrodes. The electrode 35 is attached to the backing 41 (or the subject's forehead) so that the subject can pinch it with his / her fingers when peeling it off. In this way, the forehead electrodes 31, 32 and the The work of peeling off the reference electrode 35 from the mount 41 (or the subject's forehead) becomes easy. do.

[0034] As shown in FIG. 2, a left ear electrode 33 is provided at the tip of the left arm 13, and A right ear electrode 34 is provided at the tip of the left arm 13 and the right arm 14. The length of the left ear electrode 33 and the right ear electrode 34 is set to be equal to or larger than the earlobes A1 and A2 in the 10 / 20 method. The length is set so that the device can be worn in a position such as behind the ear (in the examples shown in Figures 6 and 7). The left ear electrode 33 and the right ear electrode 34 are attached to a mount 42 so that the conductive gel does not dry out. The adhesive may be attached in a removable manner.

[0035] As shown in FIG. 2, the left arm 13 and the right arm 14 are provided at their distal ends with a left ear or Alternatively, the display units 13a and 14a may be provided to indicate that the headphones are for the right ear. In this example, the display units 13a and 14a display the characters "Left" and "Right." However, as long as it is possible to distinguish between the left and right ears, it is not limited to letters. It may be a symbol, a color, or a shape. By providing the display units 13a and 14a on the left and right ear electrodes 33 and 34, the subject can It is possible to prevent the electrodes 34 from being attached in the wrong direction, thereby improving the accuracy of the determination. It is possible.

[0036] As shown in FIG. 2, the display units 13a, 14a of the left arm 13 and the right arm 14 are arranged vertically ( That is, the angle is set in the opposite direction (outward) with respect to the direction in which the arms 13 and 14 extend. In this case, as shown in Figs. 6, 7 and 9, the left arm portion 13 and The left ear electrode 33 and the right ear electrode 34 are placed in a position such that the display units 13a and 14a of the right arm 14 are straight. When the electrodes 34 are attached behind the ears, the left arm 13 and the right arm 14 face straight up. Since the left arm 13 and the right arm 11 extend backwards, the left arm 13 and the right arm 11 extend backwards. 4. This prevents the earphones from touching the back of your ears, effectively preventing sleep disturbance.

[0037] As shown in FIG. 2, the left arm 13 and the right arm 14 are provided at their distal ends with left ear electrodes. When removing the right ear electrode 33 or the right ear electrode 34 from the mount 42 (or the area behind the subject's ear), The left hand may be provided with protrusions 13b and 14b for the examiner to pinch with his / her fingers. Peel off the ear electrode 33 or the right ear electrode 34 from the backing 42 (or from behind the subject's ear). This makes the work easier.

[0038] As shown in FIG. 2, the protrusions 13b, 14b of the left arm 13 and the right arm 14 are arranged in a vertical direction ( The arms 13 and 14 are provided at angles inclined in opposite directions (inward) with respect to the direction in which the arms 13 and 14 extend. In this case, as shown in Figs. 6, 7 and 9, the left arm 13 and the right arm 1 The left ear electrode 33 and the right ear electrode 34 are connected in such a manner that the protrusions 13b and 14b of the four electrodes are straightened. When the left arm 13 and the right arm 14 are attached behind the ears, Since the left arm 13 and the right arm 14 extend in a tilted manner toward the rear of the head, This will prevent you from hitting something on your back, effectively preventing sleep disturbance.

[0039] As shown in FIG. 2, the vertically elongated portion 12 includes signal lines extending from the electrodes 31 to 35. At the tip of the vertically elongated portion 12, a connection portion 12a for connection to the device main body portion 20 is provided. The portion 12a includes output terminals (not shown) of signal lines extending from each of the electrodes 31-35.

[0040] FIG. 4 shows the longitudinal portion 12, the left arm portion 13 and the right arm portion 14 of the electrode portion 10, along the line BB shown in FIG. The left arm portion 13 and the right arm portion 14 have a laminated structure in a longitudinal direction. The laminated structure of the vertically elongated portion 12 is similar to that of the vertically elongated portion 12, and the laminated structure of the vertically elongated portion 12 will be described below as a representative example.

[0041] As shown in FIG. 4, the longitudinally elongated portion 12 is made up of a sheet-like first reinforcing member 611 and a first reinforcing member 611. A first insulating substrate 631 laminated thereon, and signals laminated on the first insulating substrate 631 Conductor 64 (i.e., signal lines extending from each of the electrodes 31 to 35), and laminated on the signal conductor 64 A second insulating substrate 632, and a sheet-like second reinforcing Material 612 may be provided.

[0042] As the first reinforcing material 611 and the second reinforcing material 612, for example, a non-woven fabric may be used Or a foamed resin may be used. In this case, the longitudinal portion becomes lightweight and has a good touch, It is possible to prevent disturbing sleep.

[0043] As shown in FIG. 2, on the mount 42 to which the left ear electrode 33 and the right ear electrode 34 are attached A slit 42a may be formed for inserting and temporarily fixing the tip of the longitudinal portion 12. In this case, when the device is not in use, by inserting and temporarily fixing the tip of the longitudinal portion 12 into the slit 42a The device can be easily stored.

[0044] As shown in FIG. 2, among the mount 42, between the portion to which the left ear electrode 33 is attached, the portion to which the right ear Electrode 34 is attached, and the portion where the slit 42a is formed, a cut Line may be drawn so that they can be separated from each other by the cut line.

[0045] Referring to FIG. 2, the lengths L1 and L 2 from the base end portion to the bent portion of the left arm portion 13 and the right arm portion 14 may be shorter than the length L3 between the base end portions of the left arm portion 13 and the right arm portion 14 and the lateral portion 11 That is, L1 < L3 and L2 < L3). As a result of intensive studies by the inventors of the present invention, With such a length relationship, the subject does not worry about the electrode portion 10 mounted on the head This can reduce the amount of awareness you have of it and prevent it from interfering with your sleep.

[0046] As a result of extensive research, the inventors of the present invention found that in order to reduce the pain felt by subjects in their ears, The length L3 between the base end of the left arm 13 and the right arm 14 and the horizontally elongated portion 11 is preferably 5 It may be up to 10 cm, and more preferably 6 to 9 cm.

[0047] As shown in FIG. 2, the length L between the base end of the left arm 13 and the right arm 14 and the horizontally elongated portion 11 is 3 may be shorter than the length between the base end of the left arm 13 and the right arm 14 and the connecting portion 12a. As shown in FIG. 2, the left arm 13 and the right arm 14 are bent at their distal ends. The length was the same as the length between the base end of the left arm 13 and the right arm 14 and the connecting part 12a. This is also fine.

[0048] Next, the configuration of the device body 20 will be described with reference to FIGS. 1 is a block diagram showing a schematic configuration of a device main body 20.

[0049] As shown in FIG. 1 and FIG. 10, the device body 20 includes a control unit 21 and the above-mentioned connectors. The device includes a controller 22, an operation unit 23, a display unit 24, a memory unit 25, and a battery 26. do.

[0050] The display unit 24 is an interface that displays various information to the user from the device main body 20. The interface is, for example, an indicator lamp such as an LED. The display unit 24 includes five display lamps 241 to 245 corresponding to the five electrodes 31 to 35, respectively. As shown in FIG. 1, five indicator lamps 241 to 245 and five electrodes 31 to The first indicator corresponds to the left forehead electrode 31 so that the correspondence between the first indicator and the left forehead electrode 35 can be intuitively understood. lamp 241, a fifth indicator lamp 245 corresponding to the reference electrode 35, and a right forehead The second indicator lamps 242 corresponding to the electrodes 32 are arranged in a line on the left and right. , below the first indicator lamp 241 corresponding to the left forehead electrode 31, A third indicator lamp 243 is disposed corresponding to the right forehead electrode 32. A fourth indicator lamp 244 corresponding to the right ear electrode 34 may be disposed below the fourth indicator lamp 42. As shown in FIG. 1, the first indicator lamp 241, the fifth indicator lamp 245 and the second indicator lamp 242 is surrounded by a figure (contour line) having a shape similar to the planar shape of the horizontally elongated portion 11, , the third indicator lamp 243 and the fourth indicator lamp 244 indicate the left arm 13 and the right arm 14, respectively. The tip of the portion 14 may be surrounded by a figure (contour line) having a shape similar to the planar shape of the tip of the portion 14. In this case, the correspondence between the five indicator lamps 241 to 245 and the five electrodes 31 to 35 can be more intuitively understood. Each of the indicator lamps 241 to 245 indicates the corresponding electrode 31. The quality of contact between the 35 and the subject's skin can be evaluated by, for example, using different colors ( The contact may be displayed in blue if the contact is in poor condition, or in yellow if the contact is in poor condition.

[0051] The operation unit 23 is an interface for the user to operate the device main body 20. For example, a push button is used. When the operation unit 23 (push button) is pressed by the user, As a result, the indicator lamps 241 to 245 are turned off and the device body 20 The electroencephalogram measurement may be started. The operation unit 23 is designed to be easily pressed inadvertently when not required. For this reason, the recess may be recessed by one step.

[0052] The storage unit 25 is a non-volatile data storage such as a flash memory. In the memory unit 25, various data handled by the control unit 21 are stored.

[0053] The control unit 21 is a control means for performing various processes of the device main body 20. The control unit 21 This is realized by the processor in the device main body 20 executing a predetermined program. Alternatively, it may be implemented in hardware.

[0054] For example, the control unit 21 may be configured to control 4 channels (i.e., left and right channels) based on the reference electrode 35. The electroencephalogram signals from the forehead electrodes 31 and 32, the left ear electrode 33, and the right ear electrode 34) are recorded on an analog flow The signal is then A / D converted by the front end, and filtered and thinned out. After that, the control unit 21 may The control unit 21 may write the data converted into the format (t) into the storage unit 25. It may be possible to perform continuous measurement for up to 12 hours.

[0055] In addition, the control unit 21 simultaneously measures the brain waves and detects the contact state between the electrodes 31 to 35 and the skin of the subject. For example, the control unit 21 may monitor the voltage at each of the five electrodes 31 to 35. The control unit 21 may measure the contact impedance at the Based on the result, the quality of the contact state is judged, and the quality of the contact state is displayed on the display unit 24 (display line). For example, the control unit 21 may display the different colors on the buttons 241 to 245. Based on the contact impedance of the left forehead electrode 31, the contact state of the left forehead electrode 31 is If it is determined that the product is defective, the first indicator lamp 241 is changed from blue to yellow. This allows the user to intuitively know that the contact state of the left forehead electrode 31 is poor (error). Please attach the error electrode 31 firmly so that the indicator lamp 241 turns blue. This can encourage people to do so.

[0056] According to the present embodiment, the electrode unit 10 is provided with the forehead electrodes 31 and 32. A horizontally long portion 11, a vertically long portion 12 extending vertically from the horizontally long portion 11, and a pair of portions branching out to the left and right from the vertically long portion 12. The left arm portion 13 extends in the direction of the arm, and has a left ear electrode 33 and a right ear electrode 34 at the tip. The device has a very simple and unique shape, with a right arm 14 and a left arm 15, and therefore even a single subject can easily use the device. It can be easily installed in a short time and is available at low cost. The shape is also designed to be comfortable to wear and not cause any damage to the subject. This allows subjects to use the device easily at home. This makes it possible to use the device and judge sleep under everyday conditions.

[0057] According to the present embodiment, at least two forehead electrodes 31 and 32 are sheet-shaped horizontally elongated electrodes. Since the relative positions of the two are fixed, the sheet-like horizontally elongated By simply attaching the unit 11 to the subject's forehead, the electrodes 31 and 32 are arranged in the same positional relationship every time. The forehead electrodes 31 and 32 can be attached to the forehead of the subject. By doing so, it is possible to detect the movement of the eyeball in addition to the brain wave. The right and left ear electrodes 34 are attached behind the left and right ears of the subject, and in addition to brain waves, Therefore, in addition to the brainwaves, eye movements and neck movements can be detected. Since electromyographic signals can be used, the accuracy of sleep determination can be improved.

[0058] In the above-described embodiment, the left arm portion 13 and the right arm portion 14 of the electrode portion 10 are vertically elongated portions. 12, which branched out to the left and right and then curved vertically, but this is not limited to this. For example, as shown in FIG. 11, the left arm 13 and the right arm 14 are It may branch diagonally upward to the left and right and then bend and extend vertically. As shown in the figure, the left arm 13 and the right arm 14 branch off from the vertically long portion 12 and extend vertically. It may be curved and extend in a curved manner.

[0059] In the above-described embodiment, the electroencephalogram measuring device 1 receives a signal from a service provider of electroencephalogram analysis. The device is loaned to a subject (user) for a certain period of time (for example, one week), and the brainwaves are measured over multiple nights. The device is stored in the device body 20 and then returned. The service provider then The data stored in the body 20 is collectively analyzed by an external (e.g., cloud) brainwave analysis system. The purpose of the present invention is to upload the data to a computer and perform sleep analysis, but this is not limited to this. For example, the device body 20 may have a communication unit such as an LTE module, and Once the measurement is complete, the device will automatically connect to an external device (such as a cloud) via a network such as an LTE line. It is configured to upload data to the EEG analysis system of the Udo and perform sleep analysis. This can reduce the time lag for the subject until the EEG analysis results are returned. can be significantly reduced.

[0060] The above description of the embodiment and the disclosure of the drawings are intended to provide the invention as set forth in the claims. The above description of the embodiments and the disclosure of the drawings are merely illustrative examples. The invention described in the scope is not limited to the above. Any combination is possible without departing from the spirit of the present invention. [Explanation of symbols]

[0061] 1. Brain wave measuring device 10 Electrode section 11 Horizontal section 11a, 11b protrusion 12 Vertical section 12a Connection 13 Left Arm 14 Right Arm 13a, 14a Display section 13b, 14b protrusion 20 Device body 21 Control section 22 Connector part 23 Control section 24 Display section 241~245 Indicator lamp 25 Memory section 26 Battery 31, 32 Forehead electrode 33 Left ear electrode 34 Right ear electrode 35 Reference Electrode 41, 42 Mount 42a Slit 51 Electrode holding material 51a Adhesive 54 Insulating substrate 55 Electrodes and signal conductors 56 Conductive gel 611 First reinforcement 612 Second Reinforcement 631 First insulating substrate 632 Second insulating substrate 64 Signal Conductor

Claims

1. an electrode unit having at least two forehead electrodes, a reference electrode, a left ear electrode, and a right ear electrode (excluding those having electrodes attached to the subject's head other than the forehead electrode, the reference electrode, the left ear electrode, and the right ear electrode); a device main body that acquires an electrical signal from the electrode portion; An electroencephalogram measuring device comprising:

2. an electrode unit having a plurality of electrodes attached to the head of the subject; a device main body that acquires an electrical signal from the electrode portion; Equipped with The plurality of electrodes are composed of at least two forehead electrodes, a reference electrode, a left ear electrode, and a right ear electrode. Brain wave measuring device.

3. In the electrode unit, the total number of electrodes attached to the subject's head is five. The electroencephalogram measuring device according to claim 1 or 2.

4. The forehead electrode and the reference electrode are integrally provided on a sheet-like horizontally elongated member, and their relative positions are fixed. The electroencephalogram measuring device according to any one of claims 1 to 3.

5. the sheet-like horizontally elongated member has protrusions at its ends for the subject to pinch with their fingers when peeling off the forehead electrode and the reference electrode from the mount or the subject's forehead; The electroencephalogram measuring device according to claim 4 .

6. The member for holding the left ear electrode and the member for holding the right ear electrode are each provided with an indicator that indicates whether the electrode is for the left ear or the right ear. The electroencephalogram measuring device according to any one of claims 1 to 5.

7. An electrode unit that is detachable from a device main body of an electroencephalogram measuring device, An electrode unit having at least two forehead electrodes, a reference electrode, a left ear electrode, and a right ear electrode (excluding those having electrodes attached to the subject's head other than the forehead electrode, reference electrode, left ear electrode, and right ear electrode).

8. An electrode unit that is detachable from a device main body of an electroencephalogram measuring device, An electrode unit having a plurality of electrodes to be attached to the head of a subject, the plurality of electrodes consisting of at least two forehead electrodes, a reference electrode, a left ear electrode, and a right ear electrode.

9. The total number of electrodes attached to the subject's head is five. The electrode portion according to claim 7 or 8.

10. The forehead electrode and the reference electrode are integrally provided on a sheet-like horizontally elongated member, and their relative positions are fixed. The electrode portion according to any one of claims 7 to 9.

11. the sheet-like horizontally elongated member has protrusions at its ends for the subject to pinch with their fingers when peeling off the forehead electrode and the reference electrode from the mount or the subject's forehead; The electrode portion according to claim 10.

12. The member for holding the left ear electrode and the member for holding the right ear electrode are each provided with an indicator that indicates whether the electrode is for the left ear or the right ear. The electrode portion according to any one of claims 7 to 11.

Images