JP7000678B2 - EEG electrode holder - Google Patents

Description

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

In recent years, EEG measurement has been performed not only in the field of medicine but also in the fields of engineering, psychology, sports science and games. By measuring and analyzing the subject's brain waves, it is possible to obtain information on the physiological state and psychological state.
For example, there are an increasing number of cases where bioelectric signals measured by electroencephalogram measurement are used for applications other than medical purposes such as marketing and operation interfaces. Especially in such applications, there is a strong demand for improving the convenience of measurement and reducing the load on the user.

In order to easily measure the electroencephalogram, an electroencephalogram electrode holder provided with an electrode for measuring the electroencephalogram is used. The electroencephalogram electrode holder is provided with an electrode for measuring the electroencephalogram in advance, and by attaching the electrode 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 and detaching the EEG electrode holder.
Patent Document 1 describes a headgear in which electrodes are installed on a net cap made of a flexible elastic material in order to improve convenience at the time of attachment / detachment.

On the other hand, during wearing, it is important to place the electrodes at the correct positions on the head surface to obtain stable electrical contact in order to obtain stable information by EEG measurement.
Patent Document 2 describes a helmet provided with an electrode for electroencephalogram measurement capable of optimally maintaining the contact pressure with the head surface in order to improve the 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 uses a spring to absorb the difference in the shape of the head surface. Electrodes are described.

Japanese Unexamined Patent Publication No. 2002-177231 Japanese Patent No. 4216884 Japanese Unexamined Patent Publication No. 2013-240485

In order to improve the convenience of attaching and detaching the EEG electrode holder, it is necessary to arrange the electrodes for measuring EEG so that they are in flexible contact with the head surface to prevent damage to the electrodes and the head surface. .. That is, it is preferable that the electrodes are not fixed to the electroencephalogram electrode holder at the time of attachment / detachment and have a high degree of freedom.
On the other hand, during wearing, it is necessary to arrange the electrodes at the correct positions on the head surface to obtain electrically stable contact. That is, it is better that the electrodes are fixed in a desired position for correct EEG 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 meets 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 that allows the electrodes to be easily arranged at the correct positions on the head surface during wearing.

In order to solve the above problems, the present invention proposes the following means. One aspect of the brain wave electrode holder of the present invention is provided on a main body portion arranged around the head, a plurality of support portions attached to the main body portion, and at least a part of the support portions on the tip end side. A brain wave electrode holder comprising a brain wave electrode supported inside the main body portion, wherein the main body portion has an opening having a size capable of inserting a finger and touching the brain wave electrode. The brain wave electrode has a flexible portion whose base end side is supported by the support portion and is elastically deformed, and a plurality of fixed portions provided on the tip end side of the flexible portion and brought into contact with the head surface. The flexible portion has an electrode portion provided with an electrode pin, and the flexible portion can be deformed until the electrode portion is moved in a direction away from the axis of the support portion, and the flexible portion is attached to the electrode portion. The contact pressure with the head surface is applied, the flexible portion applies the contact pressure with the head surface to the electrode portion moved in a substantially parallel direction along the head surface, and the support portion is the head. It has a position adjusting screw that moves the electrode portion forward and backward with respect to the table.

The electroencephalogram electrode holder of the present invention further has a fixing pad provided on the tip side of at least a part of the remaining parts excluding the part in the plurality of the support parts and supported inside the main body part. You may.

In the electroencephalogram electrode holder of the present invention, it is preferable to deform the electrode portion until it is moved to a position where it does not overlap with the axis of the support portion.

In the electroencephalogram electrode holder of the present invention, the support portion supports the electroencephalogram electrode by a long shaft, advances and retreats the long shaft, and determines the 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, advances and retreats the long shaft, and also causes 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 between the two.

According to the present invention, it is possible to provide an electroencephalogram electrode holder that can be easily attached and detached and that can easily arrange an electrode at a correct position on the head surface.

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 the electroencephalogram electrode holder of one Embodiment of this invention. It is an electrode portion of the electroencephalogram electrode holder of one embodiment of the present invention. It is a support part and an electroencephalogram electrode of the electroencephalogram electrode holder of one Embodiment of this invention. It is a support part and an electroencephalogram electrode of the electroencephalogram electrode holder of one Embodiment of this invention. It is a support part and an electroencephalogram electrode of the electroencephalogram electrode holder of one Embodiment of this invention. It is a support part and an electroencephalogram electrode of the electroencephalogram electrode holder of one Embodiment of this invention. It is a modification of the electroencephalogram electrode holder of one embodiment of the present invention. It is a modification of the electroencephalogram electrode holder of one embodiment of the present invention. It is a modification of the electroencephalogram electrode holder of one embodiment of the present invention. It is a modification of the electroencephalogram electrode holder of one embodiment of the present invention. It is a modification of the electroencephalogram electrode holder of one embodiment of the present invention. It is a modification of the electroencephalogram electrode holder of one embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 14. In order to make the drawings easier to see, the thickness and dimensional ratio of each component are adjusted as appropriate.

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 fixing pad 7, and a chin strap 8. FIG. 2 is a cross-sectional view taken along the line A1 of FIG.

The main body frame portion 2 is formed of, for example, a frame made of a hard material, and has a hemispherical outer shape that can be arranged around the head. Due to the frame structure, it is possible to directly touch the electroencephalogram electrode 4 supported inside the main body frame portion 2 by hand. Therefore, the position of the electroencephalogram electrode 4 can be easily adjusted during wearing.
The main body frame portion 2 may be a non-frame-shaped one, for example, a helmet made of a hard material or a hat having flexibility. It does not have to be frame-shaped, as long as it has an opening large enough to allow a finger to be inserted into a helmet or hat, and the electroencephalogram electrode 4 supported inside can be directly touched by hand.
The main body frame portion 2 may have a non-hemispherical outer shape, for example, a radial frame shape such as a starfish type, a polyhedral shape, a shape in which a part of the hemisphere is missing, or the like. Further, although the details will be described later, it may be formed of a belt like the main body frame portion 2A which is a modification of the main body frame portion 2 shown in FIG.
A plurality of support portions 3 are attached to the main body frame portion 2.

As shown in FIG. 3, the support portion 3 has a position adjusting screw 31, a fixing bolt 32 that engages with the position adjusting screw 31, and a handle 33 connected to the position adjusting 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 shaft and penetrates the main body frame portion 2. By turning 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 portion 3 supports the electroencephalogram electrode 4, which will be described later, inside the main body frame portion 2. Of the remaining support portions 3, at least a part of the support portions 3 supports the fixing pad 7, which will be described later, inside the main body frame portion 2. Here, the fixing pad 7 is not always necessary. Although the details will be described later, even if the main body frame portion 20 without the fixing pad 7 is directly arranged around the head like the main body frame portion 20 which is a modification of the main body frame portion 2 shown in FIG. good.
Further, the support portion 3 can adjust the positions of the electroencephalogram electrodes 4 and the fixing pads 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. Further, the tangential direction of the head surface and the main body frame portion 2 is referred to as a horizontal direction.

The electroencephalogram electrode 4 has an electrode portion 5 and a flexible portion 6. As shown in FIG. 4, the electrode portion 5 has an electrode base material 51 and a plurality of electrode pins 52. By arranging a plurality of electrode pins 52 on the electrode base material 51, the hair H is scraped off to bring the electrode pins 52 into contact with the head surface S, and electrically stable contact is established between the electrode pins 52 and the head surface S. Obtainable.

The tip of the electrode pin 52 is brought into contact with the head surface to measure the brain wave. 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 hair without applying a conductive paste, which improves the convenience of attachment and detachment and improves 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 material 51, and each signal line is connected to a device for accumulating signals measured by an electroencephalogram electrode.

By increasing the number of electrode pins 52, it is possible to suitably measure the EEG signal. It is possible to more preferably measure the EEG signal by increasing the number of the electrode pins 52 of the electrode portion 5 closer to the crown of the head.

The flexible portion 6 is, for example, a coil spring having flexibility and elasticity. As shown in FIG. 3, the flexible portion 6 is supported by the position adjusting screw 31 of the support portion 3 on the proximal end side, and the electrode base material 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.
By contracting the flexible portion 6, 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 the coil spring, and can be made of a flexible or elastic resin member, a metal member, or an articulated member as long as the position and angle of the electrode portion 5 can be operated by an external force. It may be a mechanical mechanism or a combination thereof.

The flexible portion 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 portion 5 to a position where it does not overlap with the axis of the support portion 3.
Secondly, when the electrode portion 5 is in contact with the head surface, a contact pressure with the head surface is applied to the electrode portion 5.
Thirdly, as shown in FIG. 7, even when the electrode portion 5 is moved in a substantially parallel direction along the head surface, a contact pressure with the head surface is applied to the electrode portion 5.

The experimenter can move the electroencephalogram electrode 4 in the 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 or contact pressure of the electrode pin 52 is not limited to the combination of the main body frame portion 2 made of a hard material and the position adjusting screw 31. For example, a frame made of a hard material and a position adjusting mechanism other than screws, such as a slide mechanism, may be combined.

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

By turning 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 strap connected to the main body frame portion 2. By hooking a part of the chin strap 8 on the chin of the subject, the main body frame portion 2 can be stably fixed around the head.

Next, the operation at the time of use will be described. First, the subject is fitted with the electroencephalogram electrode holder 1. At the time of mounting, it is necessary to prevent the electrode pin 52 of the electrode portion 5 from coming into contact with the head surface of the subject and damaging the head surface by 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 come into contact with each other while the angle between the electrode pin 52 and the subject's head surface is close to vertical. I have something to do. As shown in FIG. 6, even if the subject continues the mounting operation, the flexible portion 6 is deformed and the electrode portion 5 is moved in a direction away from the axis of the support portion 3. The electrode portion 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 portion 5 to a position where it does not overlap with the axis of the support portion 3. By the operation of the flexible portion 6, it is possible to prevent the head surface from being damaged by the tip of the electrode pin 52 and the electrode pin 52 itself from being damaged.

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

Next, the electrode pin 52 of the electrode portion 5 is brought into contact with the head surface. When the electroencephalogram electrode holder 1 is attached, the electrode portion 5 to which the flexible portion 6 is curved and moved is directly moved by hand, and the electrode pin 52 of the electrode portion 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 position adjusting screw 31 of the support portion 3 that supports the electroencephalogram electrode 4 is moved in the vertical direction of the head surface to adjust the contact pressure.

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

In this way, the position and angle of the electrode portion 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 portion 5, it is not necessary to attach / detach the electroencephalogram electrode holder 1. While checking the contact state, the position and angle of the electrode pin 52 of the electrode portion 5 having poor signal quality can be adjusted to improve 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 where the electrode portion 5 is in contact with the head surface, the flexible portion 6 is deformed and the electrode portion 5 is separated from the axis of the support portion 3 as shown in FIG. Move in the direction. The electrode portion 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 portion 5 to a position where it does not overlap with the axis of the support portion 3. By the operation of the flexible portion 6, it is possible to prevent the head surface from being damaged by the tip of the electrode pin 52 and 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 / detached, the electrode pin 52 and the subject's head surface are formed in a state where the angle between the electrode pin 52 and the subject's head surface is close to vertical. Even if they come into contact with each other, the bending of the flexible portion 6 can prevent the electrode from being damaged or deformed, and can prevent the head surface from being damaged by the tip of the electrode pin 52.
Further, even while the electroencephalogram electrode holder 1 is being worn, the electrode portion 5 can be directly moved by hand. Therefore, the position of the electroencephalogram electrode 4 can be easily adjusted during wearing.
Further, even when the electrode portion 5 is moved in a substantially parallel direction along the head surface in order to adjust the position of the electrode portion 5 while the electroencephalogram electrode holder 1 is attached, the contact pressure of the electrode portion 5 with the head surface is also obtained. Can be added.

(Modification example)
Next, a modified example of the electroencephalogram electrode 4 is shown.
As shown in FIG. 9, the electroencephalogram electrode 4A, which is a modification of the electroencephalogram electrode 4, has an electrode portion 5A and an expansion / contraction portion 6A.
The electrode portion 5A has an electrode base material 51A, an electrode pin 52A, and a mounting portion 53A. The electrode pin 52A is not fixed to the electrode base material 51A, but is connected via the mounting portion 53A. The mounting portion 53A rotatably supports the end portion of the electrode pin 52A. Further, the mounting portion 53A applies a restoring force to the electrode pin 52A that restores the electrode pin 52A in the direction perpendicular to the electrode base material 51A.
The telescopic portion 6A has a core rod that can be expanded and contracted in the vertical direction, and a coil spring arranged around the core rod. The telescopic portion 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 that returns to the original position is applied to the electrode pin 52A by the mounting portion 53A. The telescopic portion 6A and the mounting portion 52A allow the tip of the electrode pin 52A to be moved in the same manner as the flexible portion 6 of the electroencephalogram electrode 4.
According to the EEG electrode 4A, when the EEG electrode holder 1 is attached / detached, the electrode pin 52A and the subject's head surface are in contact with each other while the angle between the electrode pin 52A and the subject's head surface is close to vertical. Also, the electrode portion 5A can be moved in a direction away from the axis of the support portion 3, preventing damage or deformation of the electrode and preventing damage to the head surface at the tip of the electrode pin 52A. Further, since the mounting 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 made of a material that is elastically deformed.

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

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

As shown in FIG. 11, the electroencephalogram electrode 4B, which is a modification of the electroencephalogram electrode 4, has an electrode portion 5 and an expansion / contraction portion 6B. The telescopic portion 6B has a core rod and a coil spring that can be expanded and contracted in the horizontal direction, similarly to the telescopic portion 6A. The telescopic portion 6B expands and contracts only in the vertical direction. The expansion / contraction portion 6B further has a rotation shaft 62, and is connected to the electrode portion 5 via the rotation shaft 62.

The telescopic portion 6B and the rotating shaft 62 allow the electrode portion 5 to be moved in the same manner as the flexible portion 6 of the electroencephalogram electrode 4.
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 while the angle between the electrode pin 52 and the subject's head surface is close to vertical. Further, by rotating the electrode portion 5 around the rotation shaft 62, it is possible to prevent the electrode pin 52 from being damaged or deformed, and to prevent the head surface from being damaged by the tip of the electrode pin 52.
Further, when used in combination with the support portion 3A, the 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, the main body frame 2A, which is a modification of the main body frame 2, is a belt made of an elastic material. The flexible portion 6 is connected to the main body frame 2A by the support portion 3B. The support portion 3B directly supports the flexible portion 6 and does not have a position adjusting screw 31, a fixing bolt 32, a position adjusting screw 31, or a 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 while wearing it. 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 close to vertical, the flexible portion 6 is curved and the electrode portion 5 rotates. Therefore, it is possible to prevent the electrode pin 52 from being damaged or deformed, and to prevent the head surface from being damaged by the tip of the electrode pin 52.

As shown in FIG. 13, the main body frame 2B, which is a modification of the main body frame 2, has a slide-type size adjusting portion 142. The flexible portion 6 is attached to the frame 141 made of a hard material. By sliding the frame 141 made of a hard material with respect to the slide-type size adjusting portion 142, the position of the electrode portion 5 can be adjusted according to the shape of the head of the subject.
Even if the electrode pin 52 and the subject's head surface come into contact with each other when the angle between the electrode pin 52 and the subject's head surface is close to vertical, the flexible portion 6 is curved and the electrode portion 5 is rotated. It is possible to prevent the electrode pin 52 from being damaged or deformed, and to prevent the head surface from being damaged by 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 directly arranged around the head.
The main body frame portion 20 is made 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 portion 3 supports the electroencephalogram electrode 4 inside the main body frame portion 20. The inside of the convex portion 21 is hollow, and the electroencephalogram electrode 4 is arranged inside the convex portion 21.
The convex portion 21 has an opening, and the electroencephalogram electrode 4 supported inside can be directly touched 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 while the angle between the electrode pin 52 and the subject's head surface is close to vertical. However, since the flexible portion 6 is curved, it is possible to prevent the electrode from being damaged or deformed, and to prevent the head surface from being damaged by the tip of the electrode pin 52.
Further, even while the electroencephalogram electrode holder 1 is being worn, the electrode portion 5 can be directly moved by hand. Therefore, the position of the electroencephalogram electrode 4 can be easily adjusted during wearing.
Further, even when the electrode portion 5 is moved in a substantially parallel direction along the head surface in order to adjust the position of the electrode portion 5 while the electroencephalogram electrode holder 1 is attached, the contact pressure of the electrode portion 5 with the head surface is also obtained. Can be added.

Although one embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes design changes and the like within a range that does not deviate from the gist of the present invention. In addition, the components shown in the above-described embodiment and modification can be appropriately combined and configured.

1 EEG 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 EEG electrode 5, 5A Electrode part 51 Electrode base material 52 Electrode pin 6 Flexible parts 6A, 6B Telescopic parts 7 Fixing pads 8 Jaw straps

Claims (7)

The main body placed around the head and
A plurality of support parts attached to the main body part,
An electroencephalogram electrode provided on the tip end side of at least a part of the support portion and supported inside the main body portion,
It is an electroencephalogram electrode holder equipped with
The main body portion has an opening having a size that allows a finger to be inserted and touched with the electroencephalogram electrode.
The electroencephalogram electrode is
A flexible portion whose base end side is supported by the support portion and has flexibility and elastic deformation,
It has an electrode portion provided on the tip end side of the flexible portion and having a plurality of fixed electrode pins that come into contact with the head surface.
The flexible portion can be deformed until the electrode portion is moved in a direction away from the axis of the support portion.
In the flexible portion, a contact pressure with the head surface is applied to the electrode portion, and the flexible portion is subjected to contact pressure with the head surface.
The flexible portion also applies a contact pressure with the head surface to the electrode portion moved in a substantially parallel direction along the head surface.
The support portion has a position adjusting screw for moving the electrode portion forward and backward with respect to the head surface.
EEG electrode holder. The main body placed around the head and
A plurality of support parts attached to the main body part,
An electroencephalogram electrode provided on the tip end side of at least a part of the support portion and supported inside the main body portion,
It is an electroencephalogram electrode holder equipped with
The main body portion has an opening having a size that allows a finger to be inserted and touched with the electroencephalogram electrode.
The electroencephalogram electrode is
A flexible portion whose base end side is supported by the support portion and has flexibility and elastic deformation,
It has an electrode portion provided on the tip end side of the flexible portion and in contact with the head surface, and has.
The flexible portion can be deformed until the electrode portion is moved in a direction away from the axis of the support portion.
In the flexible portion, a contact pressure with the head surface is applied to the electrode portion, and the flexible portion is subjected to contact pressure with the head surface.
The flexible portion also applies a contact pressure with the head surface to the electrode portion moved in a substantially parallel direction along the head surface.
The support portion has a position adjusting screw for moving the electrode portion forward and backward with respect to the head surface.
An electroencephalogram electrode holder further provided with a fixing pad provided on the tip side of at least a part of the remaining portions excluding the portion of the plurality of support portions and supported inside the main body portion. The flexible portion is deformed until the electrode portion is moved to a position where it does not overlap with the axis of the support portion.
The electroencephalogram electrode holder according to claim 1 or 2. The main body placed around the head and
A plurality of support parts attached to the main body part,
An electroencephalogram electrode provided on the tip end side of at least a part of the support portion and supported inside the main body portion,
It is an electroencephalogram electrode holder equipped with
The main body portion has an opening having a size that allows a finger to be inserted and touched with the electroencephalogram electrode.
The electroencephalogram electrode is
A flexible portion whose base end side is supported by the support portion and has flexibility and elastic deformation,
It has an electrode portion provided on the tip end side of the flexible portion and in contact with the head surface, and has.
The flexible portion can be deformed until the electrode portion is moved in a direction away from the axis of the support portion.
In the flexible portion, a contact pressure with the head surface is applied to the electrode portion, and the flexible portion is subjected to contact pressure with the head surface.
The flexible portion also applies a contact pressure with the head surface to the electrode portion moved in a substantially parallel direction along the head surface.
The support portion has a position adjusting screw for moving the electrode portion forward and backward with respect to the head surface.
The support portion supports the electroencephalogram electrode by a long shaft, and the support portion supports the electroencephalogram electrode.
By advancing and retreating the long shaft, and by changing the angle formed by the long shaft and the main body portion,
The position of the electroencephalogram electrode can be changed,
EEG electrode holder. The support portion supports the fixed pad and the electroencephalogram electrode by a long shaft.
By advancing and retreating the long shaft, and by changing the angle formed by the long shaft and the main body portion,
The positions of the fixed pad and the electroencephalogram electrode can be changed.
The electroencephalogram electrode holder according to claim 2. The main body placed around the head and
A plurality of support parts attached to the main body part,
An electroencephalogram electrode provided on the tip end side of at least a part of the support portion and supported inside the main body portion,
It is an electroencephalogram electrode holder equipped with
The main body portion has an opening having a size that allows a finger to be inserted and touched with the electroencephalogram electrode.
The electroencephalogram electrode is
A flexible portion whose base end side is supported by the support portion and has flexibility and elastic deformation,
It has an electrode portion provided on the tip end side of the flexible portion and in contact with the head surface, and has.
The flexible portion can be deformed until the electrode portion is moved in a direction away from the axis of the support portion.
In the flexible portion, a contact pressure with the head surface is applied to the electrode portion, and the flexible portion is subjected to contact pressure with the head surface.
The flexible portion also applies a contact pressure with the head surface to the electrode portion moved in a substantially parallel direction along the head surface.
An electroencephalogram electrode holder further provided with a fixing pad provided on the tip side of at least a part of the remaining portions excluding the portion of the plurality of support portions and supported inside the main body portion. The support portion supports the fixed pad and the electroencephalogram electrode by a long shaft.
By advancing and retreating the long shaft, and by changing the angle formed by the long shaft and the main body portion,
The positions of the fixed pad and the electroencephalogram electrode can be changed.
The electroencephalogram electrode holder according to claim 6.

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