EEG measurement 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 measurement device.

Background Art

[0002] Conventionally, as a method for scientifically measuring human sleep, polysomnography (PSG) is known. In PSG, based on measurement data of 20 or more electrodes and sensors including parameters such as respiration and circulation, determination of sleep stages and respiration and circulation information during sleep (creation of a hypnogram) is performed.

Summary of the Invention

[0003] The inventors of the present application earnestly studied to find a new technique for scientifically measuring human sleep. As a result, the following findings were obtained. However, the following findings are merely the starting point of the present invention

[0004] and do not limit the present invention. That is, in PSG, it is necessary to set 20 or more electrodes and sensors on a subject, and the setting work alone sometimes takes one hour. In addition, since it is an inspection hospitalization with supervision different from the daily state, the burden on the subject is also large, and there is a possibility of affecting the determination result. In addition, since determination of sleep stages and each parameter during sleep

[0005] (creation of a hypnogram) is performed based on measurement data of 20 or more electrodes and sensors, the analysis takes a long time.

[0006] An electroencephalogram (EEG) measuring device according to a first aspect of the present invention is: It comprises an electrode section and a device body section that acquires electrical signals from the electrode section. The electrode portion is A sheet-like, elongated section on which at least two forehead electrodes are provided side by side, It extends vertically from the horizontally elongated portion, and a connection portion to the device body is provided at its tip. The elongated vertical section, It branches to the left and right from the aforementioned elongated section, then bends and extends in the aforementioned vertical direction, with the tip being for the left ear. The left arm and right arm are equipped with electrodes and electrodes for the right ear, respectively. It holds.

[0007] In this embodiment, the electrode portion comprises a horizontally elongated portion on which a forehead electrode is provided, and a vertical portion extending from the horizontally elongated portion. It has a vertically elongated section that extends in one direction, and branches extending to the left and right from the vertical section, with electrodes for the left ear and right ear at their tips. It has a very simple and unique shape, with a left arm and a right arm equipped with electrodes. Therefore, it can be easily attached to a single subject in a short time, and is also low-cost and convenient. It can be used. Furthermore, its shape is designed to be comfortable and not disrupt sleep. This makes it possible for subjects to easily use the device at home, enabling sleep assessment in everyday conditions. Furthermore, at least two forehead electrodes are integrally provided on a sheet-like, horizontally elongated section, and they are connected to each other. Because the relative positions are fixed, simply attach the sheet-like horizontal section to the forehead area, and each electric It is possible to position the electrodes in the same relative positions each time. Furthermore, the forehead electrode is located on the subject's forehead. By attaching it to the left, it can detect eye movements in addition to brain waves. The ear electrodes and the right ear electrode are attached behind the subject's left and right ears to measure brain waves. In addition, it can detect electromyography (EMG) in the neck. Therefore, in addition to EEG, it can also detect eye movements. Because it can utilize electromyographic signals from the neck, it can improve the accuracy of sleep detection.

[0008] An electroencephalogram (EEG) measuring device according to a second aspect of the present invention is an EEG measuring device according to a first aspect. There is, A reference electrode is further provided in the elongated portion.

[0009] An electroencephalogram (EEG) measuring device according to a third aspect of the present invention is an EEG measuring device according to a second aspect. There is, The aforementioned reference electrode is located between the left and right forehead electrodes.

[0010] In this embodiment, at least two forehead electrodes and a reference electrode are sheet-shaped It is integrally attached to the horizontal part, and the relative positions of each are fixed, so the sheet-like horizontal By simply attaching the longer part to the forehead, it is possible to position each electrode in the same relative position each time. This suppresses variations in the judgment results caused by changes in the relative positions of each electrode.

[0011] An electroencephalogram (EEG) measuring device according to the fourth aspect of the present invention is an electroencephalogram (EEG) measuring device according to any of the first to third aspects. A measuring device, The distance between the base ends of the left and right arms and the transverse portion is 5 to 10 cm.

[0012] As a result of diligent research by the inventors, it was determined that in this configuration, the subject would not feel pain in the ear. This can reduce the amount of sleep disturbances and more effectively prevent sleep disruption.

[0013] An electroencephalogram (EEG) measuring device according to the fifth aspect of the present invention is an EEG measuring device according to the fourth aspect. There is, The length between the base ends of the left and right arms and the transverse portion is 6 to 9 cm.

[0014] As a result of the intensive studies by the inventors of the present invention, according to such an aspect, it is possible to further reduce the pain felt by the subject in the ears and more effectively prevent the inhibition of sleep.

[0015] The electroencephalogram measurement device according to the sixth aspect of the present invention is an electroencephalogram measurement device according to any one of the first to fifth aspects, wherein the length between the proximal ends of the left arm portion and the right arm portion and the horizontally long portion is shorter than the length between the proximal ends of the left arm portion and the right arm portion and the connecting portion.

[0016] The electroencephalogram measurement device according to the seventh aspect of the present invention is an electroencephalogram measurement device according to any one of the first to sixth aspects, wherein it has a bilaterally symmetric shape.

[0017] The electrode portion according to the eighth aspect of the present invention is a detachable electrode portion with respect to the device main body portion of the electroencephalogram measurement device, a horizontally long portion in the form of a sheet in which forehead electrodes are arranged side by side, a vertically long portion extending in the vertical direction from the horizontally long portion, and a connecting portion with the device main body portion provided at the tip, left and right arm portions that branch off from the vertically long portion in opposite left and right directions and then bend or curve in the vertical direction and extend, and left ear electrodes and right ear electrodes are provided at the tips, respectively, and has.

[0018] According to such an aspect, the electrode portion has a very simple and unique shape including a horizontally long portion provided with forehead electrodes, a vertically long portion extending in the vertical direction from the horizontally long portion, and left and right arm portions that branch off from the vertically long portion to the left and right and extend, with left ear electrodes and right ear electrodes provided at the tips. ​​​​​​Therefore, it can be easily attached to a single subject in a short time, and is also low-cost and convenient. It can be used. Furthermore, its shape is designed to be comfortable and not disrupt sleep. This makes it possible for subjects to easily use the device at home, enabling sleep assessment in everyday conditions. Furthermore, at least two forehead electrodes are provided on the sheet-like horizontal section, and their relative positions Because the relationship is fixed, you can simply stick the sheet-like horizontal section onto the forehead area and it will be the same every time. It is possible to precisely position the electrodes. Furthermore, the forehead electrode is attached to the subject's forehead. By attaching it, it can detect eye movements in addition to brain waves. Also, the left ear... The electrodes for the poles and right ear are attached behind the subject's left and right ears, and in addition to the brainwaves, they are used to measure brainwaves. It is possible to detect the electromyography (EMG) of the neck. Therefore, in addition to EEG, eye movements and neck movements can also be detected. Because it can utilize electromyographic signals, it can improve the accuracy of sleep detection. [Brief explanation of the drawing]

[0019] [Figure 1] Figure 1 shows a schematic configuration of an electroencephalogram (EEG) measurement device according to one embodiment. [Figure 2] Figure 2 is a plan view showing a schematic configuration of an electrode section according to one embodiment. [Figure 3] Figure 3 shows a cross-section of the electrode portion according to one embodiment, obtained by cutting along line AA. [Figure 4] Figure 4 shows a cross-section of the electrode portion according to one embodiment, cut along the BB line. [Figure 5] Figure 5 is a front view showing an electrode unit according to one embodiment attached to the head of a subject. [Figure 6] Figure 6 is a right-side view (viewed from the left side for the subject) showing the electrode unit according to one embodiment attached to the subject's head. [Figure 7]Figure 7 is a left side view (viewed from the right side for the subject) showing the electrode unit according to one embodiment attached to the subject's head. [Figure 8] Figure 8 is a perspective view taken from the front at an angle, showing an electrode unit according to one embodiment attached to the head of a subject. [Figure 9] Figure 9 is a perspective view from the rear at an angle, showing an electrode unit according to one embodiment attached to the head of a subject. [Figure 10] Figure 10 is a block diagram showing a schematic configuration of the device body according to one embodiment. [Figure 11] Figure 11 is a plan view showing the schematic configuration of the electrode section according to the first modified example. [Figure 12] Figure 12 is a plan view showing the schematic configuration of the electrode section according to the second modified example. [Modes for carrying out the invention]

[0020] Embodiments of the present invention will be described in detail below with reference to the attached drawings. Components with equivalent functions are assigned the same reference numeral, and detailed information about components with the same reference numeral is also provided. I won't repeat the explanation.

[0021] Figure 1 is a diagram showing a schematic configuration of an electroencephalogram (EEG) measurement device 1 according to one embodiment.

[0022] As shown in Figure 1, the electroencephalogram (EEG) measurement device 1 consists of an electrode unit 10 and an electrode unit 10 that receives electrical signals from the electrode unit 10. It includes a device body 20 for acquiring data.

[0023] This electroencephalogram (EEG) measurement device 1 can, for example, receive data from an EEG analysis service provider to a subject (user). ) is loaned out for a certain period (for example, one week), and brainwaves are measured over multiple nights and the device itself After saving to 20, it is returned, and then the service provider saves it to the main unit 20 of the device. The collected data is uploaded in bulk to an external (e.g., cloud-based) electroencephalogram (EEG) analysis system. The device performs sleep analysis. The main unit 20 of the device is charged by a charger (not shown). Alternatively, it may be operated by a built-in battery 26 (see Figure 10).

[0024] As shown in Figure 1, the electrode portion 10 may be detachable from the device body portion 20. i. As shown in Figures 5 to 9, the electrode unit 10 is the part that is attached to the head of the subject and used. Although it is prone to getting dirty or scratched during use, it is configured to be detachable from the main body of the device 20. Because of this design, even if the electrode part 10 becomes dirty or scratched, only the electrode part 10 will be protected. It can be easily exchanged.

[0025] The electrode unit 10 is disposable after a predetermined period (for example, one week) or number of uses. It may also be reusable. In this case, it may be a non-disposable type (for example, washable or reusable). Compared to types designed for repeated use by replacing only the consumable parts. Overall, it becomes possible to lower the level of mechanical durability required for the electrode part 10, It can be offered at a low cost. Furthermore, it allows for continuous measurement over multiple days using disposable devices. This eliminates the need for troublesome maintenance work, making it possible for test subjects to use it easily at home. Yes.

[0026] Figure 2 shows a schematic configuration of the electrode unit 10. Figure 5 shows the electrode unit 10 attached to the subject's head. This is a front view showing the device attached to the head. Figure 6 shows the electrode unit 10 attached to the subject's head. This is a right side view (viewed from the left side for the subject) showing the state. Figure 7 shows the electrode section 10 This is a left side view (viewed from the right side for the subject) showing the device attached to the subject's head. Yes. Figure 8 is a perspective view taken from the front at an angle, showing the electrode unit 10 attached to the subject's head. Yes. Figure 9 is a perspective view taken from the rear at an angle, showing the electrode unit 10 attached to the subject's head. be.

[0027] As shown in Figure 2, the electrode portion 10 consists of a sheet-like horizontally elongated portion 11 and a vertical portion extending from the horizontally elongated portion 11. An elongated vertical section 12, and a section that branches off to the left and right from the elongated vertical section 12 and then bends and extends in the vertical direction. It has a left arm portion 13 and a right arm portion 14. The electrode portion 10 has a symmetrical shape. It's okay to be there.

[0028] In the horizontally elongated portion 11, at least two forehead electrodes 31 and 32 are provided side by side. The distance between the left and right forehead electrodes 31 and 32 is calculated using the 10 / 20 method. The length is set so that it can be attached to the frontal poles Fp1 and Fp2. A reference electrode 35 may be further provided at 11. As shown in Figure 2, The forehead 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 placed on the backing 41 to prevent the conductive gel from drying out. It may be attached in a removable manner.

[0029] At least two forehead electrodes 31, 32 and a reference electrode 35 are arranged in a sheet-like horizontal section 1 They are integrated into 1, and their relative positions are fixed, as shown in Figures 5 to 9. Simply by attaching the sheet-like, elongated section 11 to the subject's forehead, each electrode 31, 32, It is possible to arrange electrodes 35 in the same relative positions each time, and the relative positions of electrodes 31, 32, and 35 This helps to suppress variations in judgment results caused by changes in the relationship.

[0030] Figure 3 shows an example of a cross-section obtained by cutting the elongated portion 11 of the electrode portion 10 along line AA shown in Figure 2. That is the case.

[0031] As shown in Figure 3, the elongated portion 11 consists of a sheet-like electrode holding material 51 and on the electrode holding material 51 An insulating substrate 54 laminated via adhesive 51a, and laminated on the insulating substrate 54 Even if it has an electrode and a signal conductor 55, and a conductive gel 56 stacked on the electrode 55 Good. The backing paper 41 is detachably attached to the conductive gel 56.

[0032] For the electrode holding material 51, for example, a nonwoven fabric may be used, or a foamed resin may be used. This is also acceptable. In this case, the comfort of the horizontal part 11 is improved, and sleep disturbance can be prevented. .

[0033] As shown in Figure 2, the left and right ends of the horizontally elongated portion 11 are forehead electrodes 31, 32 and reference Because the subject pinches the electrode 35 with their fingers when peeling it off the backing paper 41 (or the subject's forehead area). The projections 11a and 11b may be provided. This allows the forehead electrodes 31 and 32 to be provided. Furthermore, the process of peeling the reference electrode 35 from the backing paper 41 (or the subject's forehead) becomes easier. ru.

[0034] As shown in Figure 2, the tip of the left arm portion 13 is equipped with an electrode 33 for the left ear, and the right arm portion An electrode 34 for the right ear is provided at the tip of part 14. The left arm part 13 and the right arm part 14 The length of the left ear electrode 33 and the right ear electrode 34 is measured in the earlobe A1 and A2 in the 10 / 20 method. The length is set so that it can be attached behind the ear (as shown in Figures 6 and 7). The left ear electrode 33 and the right ear electrode 34 are attached to the backing 42 to prevent the conductive gel from drying out. It may be attached in a removable manner.

[0035] As shown in Figure 2, the tips of the left arm 13 and the right arm 14 are, respectively, for the left ear. The device may be provided with indicators 13a and 14a to indicate that it is for the right ear. In this example, the display units 13a and 14a show the words "Left" and "Right". However, as long as it can distinguish between left and right ears, it is not limited to text. It may be a symbol, or it may be a color or shape. Tips of the left arm 13 and the right arm 14 Display units 13a and 14a are provided so that the subject can see the left ear electrode 33 and the right ear This prevents the electrode 34 from being mistakenly attached in the wrong direction, thereby improving the accuracy of the judgment. It is possible.

[0036] As shown in Figure 2, the display units 13a and 14a of the left arm 13 and right arm 14 are in the vertical direction ( That is, the arms 13 and 14 are set at an angle that is inverted in the opposite direction (outward) to the direction in which they extend. It may be kicked. In this case, as shown in Figures 6, 7 and 9, the left arm portion 13 and With the display sections 13a and 14a of the right arm unit 14 facing straight, the left ear electrode 33 and the right ear electrode When electrodes 34 are attached behind the ear, the left arm portion 13 and the right arm portion 14 are (pointing straight upwards) Instead of extending, the left arm 13 and the right arm 1 This prevents the earlobe from touching the back of the ear, effectively preventing sleep disturbance.

[0037] As shown in Figure 2, the tips of the left arm 13 and the right arm 14 are equipped with electrodes for the left ear. When peeling off electrode 33 or the right ear electrode 34 from the backing paper 42 (or the area behind the subject's ear), The test subject may be provided with projections 13b and 14b for pinching with their fingers. Peel off the ear electrode 33 or the right ear electrode 34 from the backing paper 42 (or the area behind the subject's ear). This makes the task easier.

[0038] As shown in Figure 2, the protrusions 13b and 14b of the left arm 13 and the right arm 14 are in the vertical direction ( The arms 13 and 14 are provided at an angle that is inverted in opposite directions (inward) with respect to the direction in which they extend. It is acceptable. In this case, as shown in Figures 6, 7 and 9, the left arm portion 13 and the right arm portion 1 The left ear electrode 33 and the right ear electrode 34 are positioned so that the protrusions 13b and 14b of 4 are straight. When you attach it behind your ear, the left arm 13 and the right arm 14 extend straight upwards. (Instead) it will tilt and extend towards the back of the head, so the left arm 13 and the right arm 14 will be near the ears This prevents it from hitting your back, effectively preventing sleep disturbances.

[0039] As shown in Figure 2, the elongated portion 12 includes signal lines extending from each electrode 31-35. A connection portion 12a for connecting to the device body portion 20 is provided at the tip of the elongated portion 12. Section 12a includes output terminals (not shown) for signal lines extending from each electrode 31 to 35.

[0040] Figure 4 shows the vertically elongated portion 12, left arm portion 13, and right arm portion 14 of the electrode portion 10 along the BB line shown in Figure 2. This figure shows an example of a cross-section obtained by cutting. The laminated structure of the left arm 13 and the right arm 14 is elongated vertically. The laminated structure is similar to that of section 12, and the laminated structure of the elongated section 12 will be described below as representative.

[0041] As shown in Figure 4, the elongated portion 12 consists of a sheet-like first reinforcing material 611 and the first reinforcing material 611 A first insulating base material 631 laminated thereon, and signals laminated on the first insulating base material 631 Conductor 64 (that is, signal lines extending from each of the electrodes 31 to 35), and laminated on the signal conductor 64 A second insulating base material 632, and a sheet-like second reinforcing material 612 laminated on the second insulating base material 632 It may have.

[0042] As the first reinforcing material 611 and the second reinforcing material 612, for example, a non-woven fabric may be used Alternatively, 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, between the portion of the mount 42 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-off line is drawn, And they may be separable from each other by the cut-off line.

[0045] Referring to FIG. 2, the lengths L1 and L2 from the base ends to the bent portions of the left arm portion 13 and the right arm portion 14 may be shorter than the length L3 between the base ends 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 the inventors of the present invention intensively studying,<00003 said length relationship allows the subject not to worry about the electrode portion 10 worn on the head. <00…329> This can reduce the amount of time spent thinking about it, thus preventing sleep disruption.

[0046] The inventors of this case have conducted thorough research and found that in order to reduce the ear pain experienced by the subjects, The length L3 between the base end of the left arm portion 13 and the right arm portion 14 and the transverse portion 11 is preferably 5 It may be up to 10 cm, more preferably 6 to 9 cm.

[0047] As shown in Figure 2, the length L is the distance between the base end of the left arm portion 13 and the right arm portion 14 and the transverse portion 11. 3 may be shorter than the length between the base ends of the left arm portion 13 and the right arm portion 14 and the connecting portion 12a. Furthermore, as shown in Figure 2, from the bent portion to the tip of the left arm portion 13 and the right arm portion 14 The length was the same as the length between the base end of the left arm portion 13 and the right arm portion 14 and the connecting portion 12a. That's fine.

[0048] Next, the configuration of the device body 20 will be described with reference to Figures 1 and 10. Figure 1 0 is a block diagram showing the general configuration of the device body 20.

[0049] As shown in Figures 1 and 10, the device body 20 consists of a control unit 21 and the aforementioned connector It has a turntable unit 22, an operation unit 23, a display unit 24, a storage unit 25, and a battery 26. ru.

[0050] Of these, the display unit 24 displays various information to the user from the device main unit 20. It is an interface, such as an indicator lamp like an LED. In the example shown in Figure 1, The indicator unit 24 has five indicator lamps 241 to 245, each corresponding to one of the five electrodes 31 to 35. It has five indicator lamps 241-245 and five electrodes 31- To allow for an intuitive understanding of the relationship with 35, the first indicator corresponds to the left forehead electrode 31. Lamp 241, fifth indicator lamp 245 corresponding to reference electrode 35, and right forehead The second indicator lamp 242 corresponding to the electrode 32 is arranged in a row from left to right, and Below the first indicator lamp 241 corresponding to the left forehead electrode 31, there is a lamp corresponding to the left ear electrode 33. A third indicator lamp 243 is positioned, and a second indicator lamp 2 corresponds to the right forehead electrode 32. Below 42, a fourth indicator lamp 244 corresponding to the right ear electrode 34 may be positioned. Also, as shown in Figure 1, the first indicator lamp 241, the fifth indicator lamp 245, and the second indicator lamp 242 is surrounded by a figure (outline) that is similar in shape to the planar shape of the horizontal section 11, and The third indicator lamp 243 and the fourth indicator lamp 244 are located on the left arm 13 and the right arm, respectively. The tip of part 14 may be surrounded by a figure (outline) with a shape similar to its planar shape. In this case, the correspondence between the five indicator lights 241-245 and the five electrodes 31-35 becomes more intuitive. This allows for precise understanding. Each indicator lamp 241-245 corresponds to the electrode 31 ~35 indicates the quality of contact with the subject's skin, for example, different colors (if the contact is good) It may be configured to display in blue, or yellow if the contact is poor.

[0051] The operation unit 23 is an interface for the user to operate the main unit 20 of the device. For example, a push button. When the operating unit 23 (push button) is pressed by the user As a result, indicator lamps 241-245 turn off, and the device main unit 20 EEG measurement may be started. The control unit 23 is designed to prevent accidental pressing when not needed. It may be provided as a recessed area.

[0052] The memory unit 25 is a non-volatile data storage device, such as flash memory. The memory unit 25 stores various types of data handled by the control unit 21.

[0053] The control unit 21 is a control means that performs various processes on the device body 20. This is achieved when the processor in the main unit 20 of the device executes a predetermined program. It could be done that way, or it could be implemented in hardware.

[0054] For example, the control unit 21 controls 4 channels (i.e., left and right) 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 transmitted via an analog flow. After obtaining the data through A / D conversion using an end-to-end converter, filtering and decimation processes are performed. It is also possible. After that, the control unit 21 will use EDF (European Data Format). The data converted to format t) may be written to the storage unit 25. The control unit 21 performs one measurement It may also be possible to perform continuous measurements for up to 12 hours.

[0055] Furthermore, the control unit 21 simultaneously measures the electroencephalogram and the contact state between electrodes 31-35 and the subject's skin. Monitoring may be performed on each of the five electrodes 31 to 35. The contact impedance may be measured. The control unit 21 will then measure the measured contact impedance. Based on the signal, the quality of the contact is determined, and the quality of the contact is displayed on the display unit 24 (display lamp). For example, the parts 241-245 may be displayed in different colors. For example, the control unit 21, Based on the contact impedance of the left forehead electrode 31, the contact state of the left forehead electrode 31 is If a defect is determined, the indicator light on the first indicator lamp 241 will change 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 make sure to firmly attach the error electrode 31 so that the indicator lamp 241 turns blue. It can encourage them to do so.

[0056] According to the embodiment described above, the electrode section 10 is provided with forehead electrodes 31 and 32. A horizontal section 11, a vertical section 12 extending vertically from the horizontal section 11, and branches extending left and right from the vertical section 12. The left arm portion 13 extends and has an electrode 33 for the left ear and an electrode 34 for the right ear at its tip. It has a very simple and unique shape, including a right arm 14, so even with just one subject It can be attached quickly and easily, and is also low-cost to use. Furthermore, it does not disrupt sleep. The shape is designed to be comfortable and harmless. This allows test subjects to easily use it at home. This makes it possible to use the system and determine sleep patterns in everyday situations.

[0057] Furthermore, according to this embodiment, at least two forehead electrodes 31, 32 are sheet-shaped and horizontally elongated. It is integrally provided with part 11, and its relative position is fixed, so it is a sheet-like horizontal By simply attaching part 11 to the subject's forehead, the electrodes 31 and 32 are positioned in the same relative position each time. It is possible to place them. Also, the forehead electrodes 31 and 32 are attached to the forehead area of ​​the subject. By doing so, it is possible to detect eye movements in addition to brain waves. Also, the left ear electrode 33 The right ear electrode 34 is attached behind the subject's left and right ears, and in addition to the brainwaves, it also detects brain waves. It is possible to detect the electromyography (EMG) of the neck. Therefore, in addition to EEG, eye movements and neck movements can also be detected. Because it can utilize electromyographic signals, it can improve the accuracy of sleep detection.

[0058] In the embodiment described above, the left arm portion 13 and the right arm portion 14 of the electrode portion 10 are vertically elongated portion It branched off to the left and right from point 12, then bent and extended vertically, but this is not the only way it was done. No. For example, as shown in Figure 11, the left arm portion 13 and the right arm portion 14 are from the vertical portion 12. It may branch diagonally upwards to the left and right, then bend and extend vertically. Alternatively, as shown in Figure 12 As shown, the left arm portion 13 and the right arm portion 14 branch off from the vertically elongated portion 12 to the left and right, and then extend in the vertical direction. It may extend in a curved shape.

[0059] Furthermore, in the above-described embodiment, the electroencephalogram measurement device 1 and the electroencephalogram analysis service provider are The device is lent to the subject (user) for a certain period (for example, one week), and brainwaves are measured over several nights. After saving to the main unit 20 of the device, it is returned, and then the service provider will... The data stored in the body 20 is collectively sent to an external (e.g., cloud-based) electroencephalogram (EEG) analysis system. The system involves uploading data and performing sleep analysis, but it is not limited to this. For example, the main unit of the device 20 has a communication unit such as an LTE module, every night Once the measurement is complete, it will automatically connect to an external network such as an LTE connection (for example, a client). The system is configured to upload data to the electroencephalogram (EEG) analysis system (Udo) and perform sleep analysis. This may be the case. This reduces the time lag for the subject until the EEG analysis results are returned. This can be significantly shortened.

[0060] The above-described embodiments and the disclosure of drawings are intended to convey the invention described in the claims. This is merely an example for illustrative purposes, and the claims are not fully explained by the above description of the implementation or disclosure of the drawings. The invention described in the scope is not limited. The components of the embodiments described above are the invention. It is possible to combine them as you see fit, as long as it does not deviate from the main purpose. [Explanation of Symbols]

[0061] 1. Electroencephalogram (EEG) measurement device 10 Electrode section 11 Horizontal section 11a, 11b protrusion 12 Vertical section 12a Connection part 13. Left arm 14 Right arm 13a, 14a Display section 13b, 14b protrusion 20 Device main unit 21 Control Unit 22 Connector section 23 Control section 24 Display 241-245 Indicator lights 25 Memory section 26 batteries 31, 32 Forehead electrode 33 Left ear electrode 34 Right ear electrode 35 Reference electrode 41, 42 Mounting board 42a Slit 51 Electrode holding material 51a Adhesive 54 Insulating substrate 55 Electrodes and signal conductors 56 Conductive gel 611 First reinforcing material 612 Second reinforcing material 631 First insulating substrate 632 Second insulating substrate 64 Signal Conductors

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 in addition to the forehead electrode, reference electrode, left ear electrode, and right ear electrode), A device body that acquires an electrical signal from the electrode portion, The device comprises an electroencephalogram (EEG) measuring device, wherein the electrode section has a total of five electrodes attached to the subject's head, and the device body acquires four channels of EEG signals based on the reference electrode.

2. An electrode unit having multiple electrodes that are attached to the subject's head, A device body that acquires an electrical signal from the electrode portion, Equipped with, The plurality of electrodes consist of at least two forehead electrodes, a reference electrode, a left ear electrode, and a right ear electrode, and the electrode section has a total of five electrodes attached to the subject's head, and the device body is an electroencephalogram (EEG) measurement device that acquires four channels of EEG signals based on the reference electrode.

3. The forehead electrode and the reference electrode are integrally mounted on a sheet-like, horizontally elongated member, and their relative positions are fixed. The electroencephalogram measuring device according to claim 1 or 2.

4. The end of the sheet-like, elongated member is provided with a projection for the subject to grasp with their fingers when peeling the forehead electrode and reference electrode from the backing paper or the subject's forehead. The electroencephalogram measuring device according to claim 3.

5. The member that holds the left ear electrode and the member that holds the right ear electrode are each provided with an indicator to show whether they are for the left ear or the right ear. An electroencephalogram (EEG) measuring device according to any one of claims 1 to 4.

6. An electrode part that is detachable from the main body of an electroencephalogram (EEG) measurement device, The device has at least two forehead electrodes, a reference electrode, a left ear electrode, and a right ear electrode, with a total of five electrodes attached to the subject's head, and the device body is an electrode unit (excluding those having electrodes attached to the subject's head other than the forehead electrode, reference electrode, left ear electrode, and right ear electrode) that acquires 4 channels of electroencephalogram signals based on the reference electrode.

7. An electrode part that is detachable from the main body of an electroencephalogram (EEG) measurement device, The device has multiple electrodes that are attached to the subject's head, and the multiple electrodes consist of at least two forehead electrodes, a reference electrode, a left ear electrode, and a right ear electrode, with a total of five electrodes attached to the subject's head, and the device body is an electrode unit that acquires 4 channels of electroencephalogram signals based on the reference electrode.

8. The forehead electrode and the reference electrode are integrally mounted on a sheet-like, horizontally elongated member, and their relative positions are fixed. The electrode portion according to claim 6 or 7.

9. The end of the sheet-like, elongated member is provided with a projection for the subject to grasp with their fingers when peeling the forehead electrode and reference electrode from the backing paper or the subject's forehead. The electrode portion according to claim 8.

10. The member that holds the left ear electrode and the member that holds the right ear electrode are each provided with an indicator to show whether they are for the left ear or the right ear. The electrode portion according to any one of claims 6 to 9.

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