JP2018094054A - Brain wave electrode holding tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electroencephalogram electrode holder which can be easily attached and detached and can easily arrange an electrode at a correct position on a head surface. SOLUTION: An electroencephalogram electrode holder 1 is provided on a main body portion 2 arranged around a head, a plurality of support portions 3 attached to the main body portion 2, and at least a part of the support portions 3 on the tip end side. The main body 2 is provided with an electroencephalogram electrode 4 supported inside the main body, and the main body 2 has an opening having a size that allows a finger to be inserted to touch the electroencephalogram electrode, and the electroencephalogram electrode 4 has a proximal end. It has a flexible portion 6 whose side is supported by a support portion 3 and is flexible and elastically deformed, and an electrode portion 5 provided on the tip end side of the flexible portion and in contact with the head surface, and is flexible. The portion 6 can be deformed until the electrode portion 5 is moved in a direction away from the axis of the support portion, the flexible portion 6 applies contact pressure to the electrode portion 5 with the head surface, and the flexible portion 6 is the head surface. A contact pressure with the head surface is also applied to the electrode portion 5 moved in a substantially parallel direction along the above. [Selection diagram] Fig. 1

Description

  The present invention relates to a holder for fixing an electrode for measuring an electroencephalogram signal.

In recent years, electroencephalogram measurement has been performed not only in the medical field, but also in the fields of engineering, psychology, sports science and games. By measuring and analyzing the brain wave of the subject, information on the physiological state and the psychological state can be obtained.
For example, bioelectric signals measured by electroencephalogram measurement are increasingly used for purposes other than medical purposes such as marketing and operation interfaces. Particularly in such applications, there is a strong demand for improving the simplicity of measurement and reducing the burden on users.

  In order to easily measure an electroencephalogram, an electroencephalogram electrode holder having an electrode for measuring an electroencephalogram is used. The electroencephalogram electrode holder is equipped with an electrode for measuring an electroencephalogram in advance, and by attaching it to the head, the electrode can be brought into contact with the head surface and the contacted state can be maintained.

In order to improve the convenience of measurement and reduce the load on the user, it is necessary to improve the convenience of attaching / detaching the electroencephalogram electrode holder.
Patent Document 1 describes a headgear in which electrodes are installed on a net cap made of a flexible stretchable material in order to improve the ease of attachment and detachment.

On the other hand, during wearing, in order to obtain information stably by electroencephalogram measurement, it is important to place an electrode at the correct position on the head surface to obtain an electrically stable contact.
Patent Document 2 describes a helmet including an electrode for measuring an electroencephalogram capable of maintaining an optimal contact pressure with the head surface in order to improve measurement accuracy.
Patent Document 3 does not require a conductive paste or gel used to improve the electrical contact between the electrode and the head surface, and is a dry electrode for electroencephalogram measurement that absorbs the difference in shape of the head surface by a spring. An electrode is described.

JP 2002-177231 A Japanese Patent No. 4216884 JP 2013-240485 A

In order to improve the ease of attaching and detaching the electroencephalogram electrode holder, it is necessary to arrange the electrode for measuring the electroencephalogram so that it touches the head surface flexibly and prevent the electrodes and the head surface from being damaged. . That is, it is better that the electrode is not fixed to the electroencephalogram electrode holder at the time of detachment and the degree of freedom is high.
On the other hand, during wearing, it is necessary to arrange an electrode at a correct position on the head surface to obtain an electrically stable contact. That is, it is better that the electrode is fixed at a desired position for correct electroencephalogram measurement during wearing. In addition, it is better to be able to adjust individual differences such as the shape of the head surface during wearing.
An electroencephalogram electrode holder that satisfies these two different requirements is desired.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electroencephalogram electrode holder that can be easily attached and detached and can easily place an electrode at a correct position on the head surface during wearing.

In order to solve the above problems, the present invention proposes the following means.
An electroencephalogram electrode holder according to the present invention is provided on a main body portion disposed around a head portion, a plurality of support portions attached to the main body portion, and at least a part of the support portion, and the main body portion An electroencephalogram electrode supported on the inside of the electroencephalogram electrode holder,
The main body has an opening of a size that allows a finger to be inserted and touched the electroencephalogram electrode, and the electroencephalogram electrode is supported on the base end side by the support portion and is flexible and elastic. A flexible portion that deforms, and an electrode portion that is provided on a distal end side of the flexible portion and is brought into contact with a head surface, wherein the flexible portion is configured to separate the electrode portion from an axis of the support portion. The flexible portion applies a contact pressure with the head surface to the electrode portion, and the flexible portion is applied to the electrode portion moved in a substantially parallel direction along the head surface. Also apply contact pressure with the head surface.

  The electroencephalogram electrode holder according to the present invention further includes a fixing pad that is provided on at least a portion of the remaining portion excluding the portion of the plurality of support portions and is supported on the inner side of the main body portion. May be.

  In the electroencephalogram electrode holder of the present invention, it is preferable that the electrode part is deformed until it is moved to a position not overlapping the axis of the support part.

  In the electroencephalogram electrode holder of the present invention, the support portion supports the electroencephalogram electrode by a long shaft, advances and retracts the long shaft, and makes an angle formed by the long shaft and the main body portion. By changing the position, the position of the electroencephalogram electrode may be changed.

  In the electroencephalogram electrode holder of the present invention, the support portion supports the fixed pad and the electroencephalogram electrode by a long shaft, and advances and retracts the long shaft, and the long shaft and the main body portion. The positions of the fixed pad and the electroencephalogram electrode may be changed by changing the angle formed by.

  ADVANTAGE OF THE INVENTION According to this invention, the electroencephalogram electrode holder which can be easily attached or detached and can arrange | position an electrode easily in the correct position of a head surface can be provided.

It is an electroencephalogram electrode holder of one embodiment of the present invention. It is sectional drawing in A1 of FIG. It is a support part and an electroencephalogram electrode of an electroencephalogram electrode holder of one embodiment of the present invention. It is an electrode part of the electroencephalogram electrode holder of one embodiment of the present invention. It is a support part and an electroencephalogram electrode of an electroencephalogram electrode holder of one embodiment of the present invention. It is a support part and an electroencephalogram electrode of an electroencephalogram electrode holder of one embodiment of the present invention. It is a support part and an electroencephalogram electrode of an electroencephalogram electrode holder of one embodiment of the present invention. It is a support part and an electroencephalogram electrode of an electroencephalogram electrode holder of one embodiment of the present invention. It is a modification of the electroencephalogram electrode holder of one Embodiment of this invention. It is a modification of the electroencephalogram electrode holder of one Embodiment of this invention. It is a modification of the electroencephalogram electrode holder of one Embodiment of this invention. It is a modification of the electroencephalogram electrode holder of one Embodiment of this invention. It is a modification of the electroencephalogram electrode holder of one Embodiment of this invention. It is a modification of the electroencephalogram electrode holder of one Embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In addition, in order to make the drawings easy to see, the thicknesses and dimensional ratios of the respective constituent elements are appropriately adjusted.

  As shown in FIG. 1, the electroencephalogram electrode holder 1 includes a main body frame portion 2 (main body portion), a support portion 3, an electroencephalogram electrode 4, a fixed pad 7, and a chin strap 8. FIG. 2 is a cross-sectional view taken along A1 in FIG.

The main body frame portion 2 is formed of, for example, a hard material frame, and has a hemispherical outer shape that can be disposed around the head. Due to the frame structure, the electroencephalogram electrode 4 supported on the inner side of the main body frame portion 2 can be directly touched by hand. Therefore, it is possible to easily adjust the position of the electroencephalogram electrode 4 during wearing.
The main body frame 2 may be a non-frame shape, for example, a hard helmet or a flexible hat. Even if it does not have a frame shape, it may be anything as long as it has an opening of a size that allows a finger to be inserted into a helmet or hat and can directly touch the electroencephalogram electrode 4 supported on the inside.
The main body frame 2 may have a shape other than a hemispherical shape, for example, a radial frame shape such as a starfish shape, a polyhedron shape, or a shape in which a part of the hemisphere is missing. Moreover, although mentioned later for details, you may form with the belt like 2 A of main body frame parts which are the modifications of the main body frame part 2 shown by FIG.
A plurality of support portions 3 are attached to the main body frame portion 2.

As shown in FIG. 3, the support unit 3 includes a position adjustment screw 31, a fixing bolt 32 that engages with the position adjustment screw 31, and a handle 33 connected to the position adjustment screw 31. The fixing bolt 32 is attached to the main body frame portion 2. The position adjusting screw 31 is engaged with the fixing bolt 32 along the long axis and penetrates the main body frame portion 2. By rotating the handle 33, the position adjusting screw 31 can be moved back and forth along the long axis.
At least a part of the support part 3 supports an electroencephalogram electrode 4 to be described later inside the main body frame part 2. Among the remaining support portions 3, at least some of the support portions 3 support a fixing pad 7 described later on the inside of the main body frame portion 2. Here, the fixed pad 7 is not necessarily required. Although details will be described later, a main body frame portion 20 that does not include the fixing pad 7 may be arranged directly around the head like a main body frame portion 20 which is a modification of the main body frame portion 2 shown in FIG. Good.
Moreover, the support part 3 can adjust the position of the electroencephalogram electrode 4 or the fixed pad 7 in the direction perpendicular to the head surface by moving the position adjusting screw 31 forward and backward along the long axis.
In the following description, the direction perpendicular to the head surface is simply referred to as the vertical direction. The tangential direction of the head surface and the main body frame 2 is referred to as the horizontal direction.

  The electroencephalogram electrode 4 has an electrode part 5 and a flexible part 6. As shown in FIG. 4, the electrode unit 5 includes an electrode substrate 51 and a plurality of electrode pins 52. By arranging a plurality of electrode pins 52 on the electrode base 51, the hair H is scraped to bring the electrode pins 52 into contact with the head surface S, and an electrically stable contact is made between the electrode pins 52 and the head surface S. Can be obtained.

  An electroencephalogram is measured by bringing the tip of the electrode pin 52 into contact with the head surface. It is desirable to use a dry electrode for the electrode pin 52. By using a dry electrode, the electrode can be brought into contact with the head surface having scalp without applying a conductive paste, which improves the convenience during desorption and the electrical contact between the electrode and the head surface. It is valid.

  A signal line (not shown) is connected to each electrode pin 52 via an electrode base 51, and each signal line is connected to a device that accumulates signals measured by electroencephalogram electrodes.

  By increasing the number of electrode pins 52, it is possible to suitably measure the electroencephalogram signal. An electroencephalogram signal can be measured more suitably by increasing the number of electrode pins 52 of the electrode unit 5 closer to the top of the head.

The flexible portion 6 is, for example, a coil spring having flexibility and stretchability. As shown in FIG. 3, the flexible portion 6 is supported on the base end side by the position adjusting screw 31 of the support portion 3, and the electrode base 51 is attached to the distal end side. In a state where the flexible portion 6 is not deformed, the advancing / retreating direction of the position adjusting screw 31 of the support portion 3 and the direction of the electrode pin 52 of the electrode portion 5 are the same.
When the flexible portion 6 contracts, the position and angle of the electrode portion 5 with respect to the support portion 3 can be changed or adjusted.
The flexible portion 6 is not limited to a coil spring, and may be a flexible or stretchable resin member, metal member, or multi-joint as long as the configuration allows operation of the position and angle of the electrode portion 5 by external force. A mechanical mechanism or a combination thereof may be used.

The flexible part 6 performs three types of operations.
First, as shown in FIG. 6, the electrode portion 5 can be deformed until it is moved in a direction away from the axis of the support portion 3. It is preferable to move the electrode part 5 to a position where it does not overlap the axis of the support part 3.
Second, when the electrode part 5 is in contact with the head surface, a contact pressure with the head surface is applied to the electrode part 5.
Third, as shown in FIG. 7, even when the electrode unit 5 is moved in a substantially parallel direction along the head surface, contact pressure with the head surface is applied to the electrode unit 5.

The experimenter can move the electroencephalogram electrode 4 in a direction perpendicular to the head surface by turning the handle 33 of the support portion 3 on which the electroencephalogram electrode 4 is supported, and can appropriately adjust the contact pressure of the electrode portion 5.
The means for adjusting the position of the electrode pin 52 or the contact pressure is not limited to the combination of the main body frame 2 made of a hard material and the position adjusting screw 31. For example, a position adjusting mechanism such as a slide mechanism other than a hard material frame and screws may be combined.

  The fixing pad 7 stably fixes the main body frame 2 around the head without being affected by the contact state with the head surface of the electroencephalogram electrode 4.

  By rotating the handle 33 of the support portion 3 on which the fixed pad 7 is supported, the fixed pad 7 can be moved in the direction perpendicular to the head surface, and the position of the fixed pad 7 with respect to the head surface can be adjusted.

  The chin strap 8 is a string connected to the main body frame portion 2. By hooking part of the chin strap 8 on the subject's jaw, the main body frame 2 can be stably fixed around the head.

Next, the operation during use will be described. First, the subject is put on the electroencephalogram electrode holder 1. At the time of wearing, it is necessary to prevent the electrode pin 52 of the electrode unit 5 from coming into contact with the head surface of the subject and damaging the head surface with the electrode pin 52 or damaging the electrode pin 52 itself.
As shown in FIG. 5, when the subject wears the electroencephalogram electrode holder 1, the electrode pin 52 and the subject's head surface are in contact with each other with the angle formed by the electrode pin 52 and the subject's head surface being nearly perpendicular. There are things to do. Even if the subject continues the mounting operation, as shown in FIG. 6, the flexible portion 6 is deformed and moves the electrode portion 5 in a direction away from the axis of the support portion 3. The electrode unit 5 is moved in the direction opposite to the moving direction of the electroencephalogram electrode holder 1, which is the arrow direction in FIG. 6. It is preferable to move the electrode part 5 to a position where it does not overlap the axis of the support part 3. By the operation of the flexible portion 6, it is possible to prevent the head surface from being damaged at the tip of the electrode pin 52 or the electrode pin 52 itself from being damaged.

  When attaching the electroencephalogram electrode holder 1 to the subject, the fixed pad 7 is brought into contact with the head surface of the subject. If there is a gap between any one of the fixed pads 7 and the head surface of the subject, the position adjusting screw 31 of the support portion 3 that supports the fixed pad is moved in the vertical direction of the head surface to eliminate the gap. Thereby, the main body frame part 2 can be stably fixed around the head.

Next, the electrode pin 52 of the electrode unit 5 is brought into contact with the head surface. When the electroencephalogram electrode holder 1 is mounted, the electrode part 5 moved by bending the flexible part 6 is directly moved by hand, and the electrode pin 52 of the electrode part 5 is brought into contact with the head surface.
When the contact pressure between the electrode pin 52 and the head surface is insufficient, the contact pressure is adjusted by moving the position adjusting screw 31 of the support portion 3 supporting the electroencephalogram electrode 4 in the vertical direction of the head surface.

As shown in FIG. 4, since the contact state of the electrode pin 52 varies greatly depending on the contact portion of the head surface, an appropriate contact state cannot be obtained only by adjusting the contact pressure, while maintaining an appropriate angle with the head surface. It is necessary to finely adjust the contact position along the head surface.
In order to perform such fine adjustment, as shown in FIG. 7, the electrode unit 5 to be finely adjusted is directly moved by hand. The flexible part 6 is deformed, and the electrode part 5 is moved in a substantially parallel direction along the head surface. Even in this case, the flexible portion 6 can apply a contact pressure with the head surface to the electrode portion 5.

  Thus, the position and angle of the electrode unit 5 can be finely adjusted with the electroencephalogram electrode holder 1 attached to the head. In order to finely adjust the position and angle of the electrode unit 5, it is not necessary to detach the electroencephalogram electrode holder 1. While checking the contact state, it is possible to adjust the position and angle of the electrode pin 52 of the electrode unit 5 having poor signal quality, and to increase the accuracy of signal measurement.

  After measuring the electroencephalogram signal, the electroencephalogram electrode holder 1 is removed from the subject. When the electroencephalogram electrode holder 1 is removed from the state in which the electrode portion 5 is in contact with the head surface, the flexible portion 6 is deformed to separate the electrode portion 5 from the axis of the support portion 3 as shown in FIG. Move in the direction. The electrode unit 5 is moved in the direction opposite to the moving direction of the electroencephalogram electrode holder 1 which is the direction of the arrow in FIG. It is preferable to move the electrode part 5 to a position where it does not overlap the axis of the support part 3. By the operation of the flexible portion 6, it is possible to prevent the head surface from being damaged at the tip of the electrode pin 52 or the electrode pin 52 itself from being damaged.

According to the electroencephalogram electrode holder 1 of the present embodiment, when the electroencephalogram electrode holder 1 is attached and detached, the electrode pin 52 and the subject's head surface are in a state in which the angle formed by the electrode pin 52 and the subject's head surface is nearly vertical. Can be prevented from damaging or deforming the electrode, and the head surface can be prevented from being damaged at the tip of the electrode pin 52.
Further, the electrode unit 5 can be directly moved by hand even while the electroencephalogram electrode holder 1 is being worn. Therefore, it is possible to easily adjust the position of the electroencephalogram electrode 4 during wearing.
Further, when the electroencephalogram electrode holder 1 is attached, the contact pressure between the electrode portion 5 and the head surface is also applied to the electrode portion 5 when the electrode portion 5 is moved in a substantially parallel direction along the head surface to adjust the position of the electrode portion 5. Can be added.

(Modification)
Next, a modification of the electroencephalogram electrode 4 will be shown.
As shown in FIG. 9, an electroencephalogram electrode 4A, which is a modified example of the electroencephalogram electrode 4, has an electrode portion 5A and an expansion / contraction portion 6A.
The electrode portion 5A includes an electrode base material 51A, an electrode pin 52A, and an attachment portion 53A. The electrode pin 52A is not fixed to the electrode substrate 51A, and is connected via the attachment portion 53A. The attachment portion 53A supports the end portion of the electrode pin 52A so as to be rotatable. Further, the attachment portion 53A applies a restoring force for restoring the electrode pin 52A in a direction perpendicular to the electrode base material 51A to the electrode pin 52A.
The expansion / contraction part 6A has a core rod that can be expanded and contracted in the vertical direction, and a coil spring disposed around the core rod. The expansion / contraction part 6A expands and contracts only in the vertical direction.

When a horizontal force is applied to the tip of the electrode pin 52A, the telescopic portion 6A does not move in the horizontal direction, but the tip side of the electrode pin 52A moves in the horizontal direction. A restoring force for returning to the original position is applied to the electrode pin 52A by the mounting portion 53A. Like the flexible part 6 of the electroencephalogram electrode 4, the tip of the electrode pin 52A can be moved by the expansion / contraction part 6A and the attachment part 52A.
According to the electroencephalogram electrode 4A, when the electroencephalogram electrode holder 1 is attached / detached, the electrode pin 52A and the subject's head surface are in contact with each other with the angle formed by the electrode pin 52A and the subject's head surface being nearly perpendicular. In addition, the electrode portion 5A can be moved away from the axis of the support portion 3 to prevent the electrode from being damaged or deformed, and the head surface can be prevented from being damaged at the tip of the electrode pin 52A. Further, since the attachment portion 53 has a restoring force, the contact pressure between the electrode pin 52A and the head surface is maintained even when the electrode portion 5A is moved in a substantially parallel direction along the head surface.
Even if the mounting portion 53A is not provided, the same effect can be obtained even if the electrode pin itself is formed of a material that elastically deforms.

  As shown in FIG. 10, the support 3 </ b> A, which is a modification of the support 3, includes a position adjustment screw 31, a fixing bolt 32 </ b> A that engages with the position adjustment screw 31, and a handle 33 connected to the position adjustment screw 31. And a fixing bolt 32A and a mounting portion 32B connected via a rotating shaft 32C. The attachment portion 32B is fixed to the main body frame portion 2. The fixing bolt 32A and the position adjusting screw 31 can rotate around the rotation shaft 32C.

  According to this support portion 3A, when the electroencephalogram electrode holder 1 is attached / detached, the electrode pin 52 and the subject's head surface are in contact with each other in a state in which the angle between the electrode pin 52 and the subject's head surface is nearly vertical. In addition, by rotating the fixing bolt 32A and the position adjusting screw 31 around the rotation shaft 32C, it is possible to prevent the electrode from being damaged or deformed and to prevent the head surface from being damaged at the tip of the electrode pin 52.

  As shown in FIG. 11, an electroencephalogram electrode 4 </ b> B, which is a modification of the electroencephalogram electrode 4, has an electrode portion 5 and an expansion / contraction portion 6 </ b> B. The expansion / contraction part 6B has a core rod and a coil spring that can expand and contract in the horizontal direction, like the expansion / contraction part 6A. The expansion / contraction part 6B expands and contracts only in the vertical direction. The expansion / contraction part 6 </ b> B further includes a rotation shaft 62 and is connected to the electrode unit 5 via the rotation shaft 62.

Similarly to the flexible part 6 of the electroencephalogram electrode 4, the electrode part 5 can be moved by the extendable part 6 </ b> B and the rotating shaft 62.
According to the electroencephalogram electrode 4B, when the electroencephalogram electrode holder 1 is attached / detached, the electrode pin 52 and the subject's head surface are in contact with each other with the angle formed by the electrode pin 52 and the subject's head surface being nearly perpendicular. In addition, since the electrode portion 5 rotates around the rotation shaft 62, the electrode pin 52 can be prevented from being damaged or deformed, and the head surface can be prevented from being damaged at the tip of the electrode pin 52.
Further, when used in combination with the support portion 3A, contact pressure with the head surface can be applied to the electrode pin 52 even when the electrode portion 5 is moved in a substantially parallel direction along the head surface.

As shown in FIG. 12, a main body frame 2A, which is a modification of the main body frame 2, is a stretchable belt. The flexible portion 6 is connected to the main body frame 2A by the support portion 3B. The support portion 3 </ b> B directly supports the flexible portion 6, and does not include the position adjustment screw 31, the fixing bolt 32, the position adjustment screw 31, and the handle 33.
According to the main body frame 2A, the electroencephalogram electrode holder 1 can be easily attached and detached. Further, since the main body frame 2A has a belt shape, it is possible to directly touch the electroencephalogram electrode 4 with the hand during wearing. Further, even if the electrode pin 52 and the subject's head surface come into contact with each other when the angle formed by the electrode pin 52 and the subject's head surface is nearly vertical, the flexible portion 6 is curved and the electrode portion 5 rotates. Thus, breakage and deformation of the electrode pin 52 can be prevented, and damage to the head surface at the tip of the electrode pin 52 can be prevented.

As shown in FIG. 13, a main body frame 2 </ b> B, which is a modified example of the main body frame 2, has a slide type size adjusting unit 142. The flexible portion 6 is attached to the frame 141 made of hard material. The position of the electrode unit 5 can be adjusted in accordance with the shape of the subject's head by sliding the frame 141 made of a hard material with respect to the slide-type size adjusting unit 142.
Even if the electrode pin 52 and the subject's head surface are in contact with each other in a state where the angle between the electrode pin 52 and the subject's head surface is nearly vertical, the flexible portion 6 is curved and the electrode portion 5 is rotated. It is possible to prevent breakage and deformation of the electrode pin 52 and prevent the head surface from being damaged at the tip of the electrode pin 52.

As shown in FIG. 14, the main body frame portion 20 which is a modification of the main body frame portion 2 does not include the fixing pad 7. The main body frame portion 20 is disposed directly around the head.
The main body frame portion 20 is formed of, for example, a hard material and has a hemispherical outer shape that can be arranged around the head. Further, the main body frame portion 20 has a plurality of convex portions 21 to which the support portion 3 is attached. At least a part of the support part 3 supports the electroencephalogram electrode 4 inside the main body frame part 20. The convex portion 21 has a hollow inside, and the electroencephalogram electrode 4 is disposed inside the convex portion 21.
The convex part 21 has an opening part, and can directly touch the electroencephalogram electrode 4 supported inside by hand.

According to the main body frame 20, when the electroencephalogram electrode holder 1 is attached / detached, the electrode pin 52 and the subject's head surface are in contact with each other in a state where the angle between the electrode pin 52 and the subject's head surface is close to vertical. In addition, since the flexible portion 6 is curved, the electrode can be prevented from being damaged or deformed, and the head surface can be prevented from being damaged at the tip of the electrode pin 52.
Further, the electrode unit 5 can be directly moved by hand even while the electroencephalogram electrode holder 1 is being worn. Therefore, it is possible to easily adjust the position of the electroencephalogram electrode 4 during wearing.
Further, when the electroencephalogram electrode holder 1 is attached, the contact pressure between the electrode portion 5 and the head surface is also applied to the electrode portion 5 when the electrode portion 5 is moved in a substantially parallel direction along the head surface to adjust the position of the electrode portion 5. Can be added.

  As mentioned above, although one Embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this Embodiment, The design change etc. of the range which does not deviate from the summary of this invention are included. In addition, the constituent elements shown in the above-described embodiment and modifications can be combined as appropriate.

DESCRIPTION OF SYMBOLS 1 Electroencephalogram electrode holder 2, 2A, 2B, 20 Main body frame part 3, 3A, 3B Support part 31 Position adjustment screw 32 Fixing bolt 33 Handle 4, 4A, 4B Electroencephalogram electrode 5, 5A Electrode part 51 Electrode base material 52 Electrode pin 6 Flexible portion 6A, 6B Extendable portion 7 Fixed pad 8 Jaw strap

Claims (5)

A main body arranged around the head;
A plurality of support portions attached to the body portion;
An electroencephalogram electrode which is provided on the tip side of at least a part of the support part and is supported inside the main body part;
An electroencephalogram electrode holder comprising:
The main body has an opening of a size that allows the finger to be inserted and touch the electroencephalogram electrode;
The electroencephalogram electrode is:
A flexible portion that is supported by the support portion on the base end side and is flexible and elastically deformed;
An electrode part provided on the distal end side of the flexible part and brought into contact with the head surface,
The flexible part can be deformed until the electrode part is moved in a direction away from the axis of the support part,
The flexible part applies a contact pressure with the head surface to the electrode part,
The flexible portion applies a contact pressure with the head surface also to the electrode portion moved in a substantially parallel direction along the head surface.
EEG electrode holder.   2. The electroencephalogram electrode according to claim 1, further comprising: a fixed pad that is provided on at least a part of the remaining part excluding the part and supported on the inner side of the main body part in the plurality of support parts. Retaining tool. The flexible part is deformed until the electrode part is moved to a position that does not overlap the axis of the support part.
The electroencephalogram electrode holder according to claim 1 or 2. The support part supports the electroencephalogram electrode by a long axis,
By advancing and retracting the long shaft, and changing the angle formed by the long shaft and the main body,
The position of the electroencephalogram electrode can be changed,
The electroencephalogram electrode holder according to claim 1. The support part supports the fixed pad and the electroencephalogram electrode by a long axis,
By advancing and retracting the long shaft, and changing the angle formed by the long shaft and the main body,
The position of the fixed pad and the electroencephalogram electrode can be changed,
The electroencephalogram electrode holder according to claim 2.

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