JP2005152415A - Biological signal detecting electrode and biological signal detector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily and securely bring an electrode part into contact with the surface of a living body while eliminating the time and effort for plowing through hair. <P>SOLUTION: The biological signal detector 5 comprises a support member 13 to be set adjacent to the head of the living body, and the electrode part 15 supported by the support member 13 in contact with the surface of the head for detecting the electric signal of the head. The electrode part 15 is supported by the support member 13 so as to be freely rocked. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a biological signal detection electrode that detects an electrical signal by contacting a scalp in order to detect a biological signal such as an electroencephalogram, and a biological signal detection device using the same.

Conventionally, as a biological signal detection apparatus, an apparatus including a biological signal detection electrode that comes in contact with the surface of a living body and detects an electrical signal from the living body has been proposed (for example, see Patent Document 1).
The biological signal detection electrode described in Patent Document 1 has a connector structure formed by a plug portion provided with an electrode portion and a receptacle portion into which the plug portion can be fitted. When detecting the electroencephalogram, with the receptacle portion set on the scalp, the plug portion is aligned with the receptacle portion, so that the scalp and the electrode portion are brought into contact with each other so that a weak period of current, that is, an electroencephalogram Is detected electrically.
JP 2002-177231 A

In the above-described conventional biological signal detection device, when the biological signal detection electrode is brought into contact with the scalp covered with scalp, the hair is interposed between the scalp and the electrode unit simply by bringing the electrode close to the scalp. In addition, it is difficult to reliably contact the scalp and the electrode part. Therefore, the scalp was scraped in advance to expose the scalp, and then the electrode was brought into contact with that portion. For this reason, the work of scraping the hair in advance is time-consuming and extra time-consuming, making the work related to the inspection complicated.
The present invention has been made in view of the above-described circumstances, and eliminates the labor of scraping, and makes it possible to easily and surely bring a living body surface and an electrode portion into contact with each other and a living body signal detection including the living body signal detecting electrode. An object is to provide an apparatus.

In order to achieve the above object, the present invention provides the following means.
The biological signal detection electrode of the present invention includes a support member that can be installed close to a living body, and an electrode portion that is supported by the support member and detects an electrical signal of the living body while being in contact with the surface of the living body. The electrode part is supported by a support member so as to be swingable.

  According to this invention, when the electrode unit is brought close to the scalp covered with scalp and the electrode unit is swung with the scalp interposed between the scalp and the electrode unit, the scalp is separated according to the movement of the electrode unit. The scalp is exposed and the electrode part and the scalp are in direct contact. Therefore, it is not necessary to scrape the hair in advance before bringing the electrode portion close to the scalp, and unnecessary labor is eliminated, so that the work related to the inspection can be simplified.

In the biological signal detection electrode of the present invention, it is preferable that an elastic member is provided on the support member so as to be interposed between the electrode portion and support the electrode portion.
According to this invention, when the electrode part is swung with the scalp interposed between the scalp and the electrode part, the elastic member provided on the support member is elastically deformed, so that the electrode part is swung in all directions. Move. Therefore, the scalp and the electrode part can be brought into contact with each other in a state adapted to the undulation of the head.

In the biological signal detection electrode of the present invention, it is preferable that a spherical portion is formed in the electrode portion, and the spherical portion is supported so as to be rotatable in contact with the support member.
According to this invention, when the electrode portion is swung with the scalp interposed between the scalp and the electrode portion, the spherical portion rotates in contact with the support member. Therefore, the hair can be scraped off in a state where the electrode portion is securely held by the support member.

  The biological signal detection electrode of the present invention includes a moving member supported by the supporting member so as to be movable in a direction approaching or separating from the head, and the electrode portion according to the movement of the moving member. It is preferable to provide a rocking mechanism for rocking.

  According to the present invention, with the scalp interposed between the scalp and the electrode portion, the support member is brought close to the scalp covered with scalp and the support member is further moved to the head after the moving member is brought into contact with the scalp. When moving closer to, the moving member moves away from the head. In accordance with this movement, the swing mechanism swings the electrode portion, and the hair is scraped. Therefore, the hair is scraped only by performing the operation of bringing the support member close to the scalp, the scalp is exposed and the electrode part and the scalp are in direct contact, and unnecessary labor is eliminated.

Moreover, it is preferable that the biological signal detection electrode of the present invention includes a biasing unit that biases the electrode portion and avoids it at a predetermined position.
According to this invention, when the support member is moved away from the head, the biasing member returns the electrode portion to a predetermined position. Thereby, when making a scalp and an electrode part contact again, an electrode part will return to a predetermined position, and the effort of the operation | work which concerns on the next test | inspection can be saved.

The biological signal detection electrode of the present invention includes a support member that can be installed close to the head, and an electrode unit that is supported by the support member and detects an electrical signal of the head by contacting the surface of the head It is preferable that the projection portion is provided around the electrode portion and provided so as to be rotatable around the electrode portion.
According to the present invention, when the supporting member is brought close to the head and the electrode portion is brought into contact with the head, and then the protruding portion is rotated, the protruding portion scratches the hair covering the scalp. Thereby, the scalp is exposed and the electrode part and the scalp are in direct contact. Therefore, it is not necessary to scrape the hair in advance before bringing the electrode portion close to the scalp, and unnecessary labor is eliminated.

The biological signal detection electrode of the present invention includes a moving member supported on the support member so as to be movable in a direction approaching or separating from the head, and the protrusion according to the movement of the moving member. It is preferable to provide a turning mechanism for turning.
According to the present invention, with the scalp interposed between the scalp and the electrode portion, the support member is brought close to the scalp covered with scalp and the support member is further moved to the head after the moving member is brought into contact with the scalp. When moving closer to, the moving member moves away from the head. In accordance with this movement, the rotation mechanism rotates the protrusion and scrapes the hair. Therefore, since the hair is scraped only by performing the operation of bringing the support member closer, it is possible to save the trouble of rotating the protruding portion and further simplify the operation.

The biological signal detection electrode of the present invention preferably includes a biasing member that biases the electrode portion toward the head.
According to this invention, when the support member is brought closer to the head and the electrode part is further brought into contact with the head, the electrode part comes into contact with the head while the urging member is urged. Therefore, the electrode portion is pressed against the head by the urging force of the urging member, and it is possible to keep the head and the electrode portion always in contact with each other.

The biological signal detection device of the present invention preferably includes the biological signal detection electrode of the present invention, and a mounting member that includes the electrode portion and is mounted on the head.
According to the present invention, the biological signal detection electrode can be held at a predetermined position on the head in a state where an electrical signal can be acquired simply by attaching a mounting member to the head. Becomes easy. In addition, when the mounting member is attached to the head, the biological signal detection electrode is held at a predetermined position, and the scalp and the electrode portion are reliably in contact with each other. It becomes possible to acquire stably.

The biological signal detection device of the present invention includes an electrode unit that detects an electrical signal of the head by contacting the surface of the head, a mounting member that includes the electrode unit and is mounted on the head, and the mounting It is preferable to include a protruding portion disposed in front of the electrode portion in the direction in which the member is mounted.
According to this invention, the protrusion part distribute | arranged ahead from the electrode part scrapes hair with the operation | movement which attaches a mounting member to a head. Therefore, the hair is scraped only by performing the operation of attaching the mounting member, the scalp is exposed and the electrode part and the scalp are in direct contact, and the work relating to the inspection can be further simplified.

The biological signal detection device of the present invention includes a support member that can be installed close to the head, an electrode unit that contacts the surface of the head and detects an electrical signal of the head, the support member, and the electrode And a linear flexible member that supports the electrode part interposed between the electrode part and the electrode part.
According to the present invention, when the support member is brought close to the head, the electrode portion is brought into contact with the head, and further brought closer, the linear flexible member bends, and the electrode portion supported by the flexible member becomes It is inserted between the heads and touches the head directly. Therefore, the electrode in contact with the scalp is pressed against the scalp by the elasticity of the flexed flexible member, and the electrode part and the scalp can be brought into direct contact with a simpler operation.

  The biological signal detection device of the present invention includes a support member that can be installed close to the head, an electrode unit that contacts the surface of the head and detects an electrical signal of the head, the support member, and the electrode An elastic member that is interposed between the electrode portion, supports the electrode portion, and biases the electrode portion toward the head, and is arranged around the electrode portion, and is elastically deformed by infiltrating the electrolyte solution. And a porous member.

  According to the present invention, when the support member is brought close to the head and the porous member and the electrode portion infiltrated with the electrolyte solution are brought into contact with the head, the electrolyte solution oozes out from the porous member, and the support member is further moved to the head. When approaching the part, the elastic member exerts a resilience, and the electrode part supported by the elastic member is inserted between the hairs and directly contacts the scalp. Therefore, the electrode part in contact with the scalp ensures good conductivity with the scalp by the exuded electrolyte solution, and is pressed against the scalp by the elastic force of the elastic member, so that the electrode part And the scalp can be brought into contact with each other.

  According to the biological signal detection electrode and the biological signal detection device according to the present invention, it is not necessary to scrape the hair in advance, so that unnecessary work can be saved, and the biological surface and the electrode portion can be easily and reliably removed. It becomes possible to make it contact.

Hereinafter, a biological signal detection apparatus according to a first embodiment of the present invention will be described with reference to FIGS.
The biological signal detection apparatus 1 according to the present embodiment detects an electrical signal generated by neuronal activity in the brain. As shown in FIG. 1, the biological signal detection device 1 includes a helmet (mounting member) 3 that covers a head (living body) H, and a plurality of biological signal detection electrodes that are detachably provided on the helmet 3 and are arranged in a distributed manner. 5 and a biological signal measuring device 7 that measures an electroencephalogram based on the electrical signal output from the biological signal detection electrode 5. Each biological signal detection electrode 5 and biological signal measuring device 7 are provided with lead wires 9 for electrically connecting them. Here, the electrical signal output from the biological signal detection device 1 indicates the value of the potential at the biological signal detection electrode 5.

  As shown in FIG. 2, the biological signal detection electrode 5 has an opening 11 and a support member 13 provided at a predetermined part of the helmet 3, and an electrode portion 15 that contacts the scalp Hs to detect a biological electrical signal. A substantially prismatic moving member 17 supported on the support member 13 so as to be movable with respect to the head H, and a swinging mechanism 19 that swings the electrode portion 15 in accordance with the movement of the moving member 17. I have.

The moving member 17 includes a contact member 21 that contacts the scalp Hs, and a T-shaped member 23 that is disposed at one end of the contact member 21 and is movable in a state of being fitted to the opening 11. The moving member 17 is movable in the thickness direction (AB direction) of the support member 13, that is, in a direction approaching (A direction) or separating (B direction) with respect to the head H.
The swing mechanism 19 is fixed to the support member 13 and is rotatable about an axis L1 perpendicular to the thickness direction, a pinion gear 25a provided on the outer peripheral portion of the turntable 25, and a contact member 21. The rack gear 21a is provided at one end in the length direction, and a coil spring (biasing member) 27 that biases the rotating disk 25 and avoids it at a predetermined position.
The turntable 25 is provided with an electrode portion 15 disposed at a position facing the head H, and a protrusion 29 disposed around the electrode portion 15 and capable of rotating around the electrode portion 15. .

  The pinion gear 25a is disposed in the vicinity of the contact member 21, and the pinion gear 25a and the rack gear 21a are engaged with each other. The contact member 21 is supported by the support member 13 so as to be linearly reciprocable in the direction of the arrow AB, and the coil spring 27 is disposed in a slightly compressed state between the support member 13 and the contact member 21. Is constantly biased in the A direction. Thus, when the moving member 17 moves linearly in the direction of the arrow AB, the pinion gear 25a meshed with the rack gear 21a is rotated.

Next, a method for using the biological signal detection apparatus 1 configured as described above will be described.
First, the helmet 3 is put on the head H, and the electrode portions 15 of the biological signal detection electrodes 5 are made to face the head H close to each other. In this state, the helmet 3 is fixed to the head H, and each biological signal detection electrode 5 is fixed to a position facing the scalp Hs.
Thereafter, when the helmet 3 is further moved closer to the head H even after the moving member 17 is brought into contact with the scalp, the moving member 17 is gradually moved linearly in the direction of arrow B, and the T-shaped member 23 projects from the opening 11. . At this time, according to the movement of the moving member 17, the turntable 25 is rotated through the pinion gear 25a meshed with the rack gear 21a. By this rotational movement, the scalp hair is scraped off by the protrusion 29, the scalp Hs is exposed, and the electrode part 15 and the scalp Hs come into direct contact. Then, after performing a predetermined inspection, when the helmet 3 is moved away from the head H, the rotating disk 25 is avoided to the original position by the coil spring 27.

  That is, according to the biological signal detection apparatus 1 according to the present embodiment, the hair is scraped only by performing the operation of wearing the helmet 3. Therefore, it is not necessary to scrape the hair in advance before bringing the electrode portion 15 close to the scalp Hs, and unnecessary labor is eliminated, so that the work related to the inspection can be simplified. Further, when the scalp Hs and the electrode unit 15 are brought into contact again, the electrode unit 15 is returned to the original position, and the work for the next inspection can be saved.

  In the present embodiment, the biological signal detection electrode 5 is provided with an elastic member 31 that supports the electrode unit 15 interposed between the electrode unit 15 and the support member 13 as shown in FIG. May be. In the case of this configuration, when the electrode portion 15 is swung in a state where the hair is interposed between the scalp Hs and the electrode portion 15, the elastic member 15 provided on the support member 13 is shown in FIG. As shown, the electrode portion 15 swings in all directions for elastic deformation. Alternatively, as shown in FIG. 4, the electrode member 15 may be passed through the elastic member 31. In the case of this configuration, since the electrode unit 15 can be swung to the position shown by the chain line, the scalp Hs and the electrode unit 15 can be brought into contact with each other in a state adapted to the undulation of the head H.

  Further, the electrode portion 15 may be detachable from the elastic member 31, or the electrode portion 15 and the elastic member 31 may be configured integrally and detachable from the support member 13. In the case of these configurations, since the electrode portion 15 or the integrally configured electrode portion 15 and the elastic member 31 can be handled as disposable, it is not necessary to wash the biological signal detection electrode 5 after the test is completed. The biological signal detection electrode 5 can be easily handled.

  Furthermore, as shown in FIG. 5, the electrode part 15 supported by one elastic member 31 may be plural. With such a configuration, the plurality of electrode portions 15 can be swung to increase the number of electrode portions 15 that are in contact with the scalp Hs at a time, so that it is possible to reduce the time required for the inspection. It becomes.

  Further, as shown in FIG. 6, the electrode portion 15 may be formed with a spherical portion 33, and the spherical portion 33 may be rotatably supported in contact with the support member 13. With such a configuration, when the electrode unit 15 is swung with the scalp interposed between the scalp Hs and the electrode unit 15, the spherical portion 33 rotates in contact with the support member 13. Therefore, it is possible to scrape the hair while the electrode portion 15 is securely held by the support member 13. In the case of this configuration, by providing the lid 35, it is possible to handle only the electrode portion 15 as disposable.

Next, a biological signal detection apparatus according to a second embodiment of the present invention will be described with reference to FIG. In each embodiment described below, portions having the same configuration as those of the biological signal detection device 1 according to the first embodiment described above are denoted by the same reference numerals and description thereof is omitted.
In the biological signal detection electrode 40 according to the present embodiment, the configuration of the swing mechanism 19 provided in the biological signal detection electrode 5 is different from that of the first embodiment.

As shown in FIG. 7, the swing mechanism 41 includes a pair of support bars 45 disposed between an inner wall surface 43 a and an inner wall surface 43 b of a pair of recesses 43 provided in the support member 13, and the support bars 45. And a moving member 47 inserted into the.
A coil spring 49 is disposed between the moving member 47 and the inner wall surface 43a and the inner wall surface 43b in a slightly compressed state. In a state where no force is applied to the electrode portion 15, the moving member 47 is supported by the support rod 45. Is held at an intermediate position. Thereby, the moving member 47 can swing in the AB direction and the length direction (CD direction) of the moving member 47.

Next, a method for using the biological signal detection apparatus configured as described above will be described.
The helmet 3 is put on the head H in the same manner as in the first embodiment. Then, when the rotating disk 25 is swung in the AB direction and the CD direction with the hair interposed between the scalp Hs and the electrode portion 15, the coil spring 49 elastically deforms, and the protruding portion 29 scrapes the hair. The scalp Hs is exposed and the electrode unit 15 and the scalp Hs come into direct contact.

  In other words, according to the biological signal detection device according to the present embodiment, even after the turntable 25 is brought into contact with the head H, the turntable 25 is swung in the AB direction and the CD direction to scrape the hair. it can. Therefore, the scalp Hs and the electrode unit 15 can be brought into contact with each other more reliably.

  Next, a biological signal detection apparatus according to a third embodiment of the present invention will be described with reference to FIGS. The biological signal detection apparatus according to the present embodiment is different from the first embodiment in that the shape of the support member 51 of the biological signal detection electrode 50 and a protrusion are provided instead of the moving member 17 and the swing mechanism 19. .

As shown in FIG. 8A, the biological signal detection electrode 50 includes a support member 51 in which a fixed lead female screw 52 is formed in an opening 51a, and a male screw 54 that is screwed to the female screw 52 on an outer peripheral surface. And a coil spring (biasing member) 56 that urges the electrode portion 15 toward the head.
As shown in FIG. 8B, the moving member 55 has a protruding portion 57 at a position facing the scalp Hs. The moving member 55 is provided so as to be rotatable around the electrode portion 15 by a female screw 52 and a male screw 54.

Next, a method for using the biological signal detection apparatus configured as described above will be described.
First, the helmet 3 is put on the head H as in the first embodiment. And by moving the moving member 55 in a state where the hair is interposed between the scalp Hs and the electrode portion 15, the moving member 55 is moved in the AB direction, and the protruding amount of the moving member 55 from the support member 51 is adjusted. The state is adapted to the undulation of the head H. At this time, as the moving member 55 rotates, the scalp is scraped and the scalp Hs is exposed, and as shown in FIG. 9, the electrode unit 15 and the scalp Hs are in direct contact with the coil spring 57 being biased. To do.

  That is, according to the biological signal detection device according to the present embodiment, by rotating the moving member 55, the position of the electrode unit 15 with respect to the head H can be changed, and the protruding amount of the electrode unit 15 can be adjusted. It becomes possible to make it suitable for the undulation of the head H. Moreover, since the scalp is scraped only by rotating the moving member 55, the scalp Hs and the electrode unit 15 can be brought into contact with each other with a simpler operation.

Next, a biological signal detection apparatus according to a fourth embodiment of the present invention will be described with reference to FIGS. The biological signal detection electrode 60 according to the present embodiment is different from the first embodiment in that it includes a rotation mechanism 63 having a first rotation member 61 and a second rotation member 62 instead of the rotation member 25. Yes.
As shown in FIG. 10, the first rotating member 61 includes a pinion 61a that meshes with a rack gear 21a provided on the contact member 21, and a first bevel gear 61b formed around the axis L1. The first rotating member 61 is rotatable around the axis L1.
The second rotating member 62 is disposed on the second bevel gear 62a that meshes with the first bevel gear 61b, and on the rotation axis L2 that faces the head H and is orthogonal to the axis L1, as shown in FIG. The electrode portion 15 and a columnar protruding portion 62b arranged with a space in the radial direction of the electrode portion 15 are provided. The second rotating member 62 is rotatable around the rotation axis L2.

Next, a method for using the biological signal detection apparatus configured as described above will be described.
First, when the helmet 3 is put on the head H and the contact member 21 is brought into contact with the head H in the same manner as in the first embodiment, the T-shaped member 23 protrudes from the opening 11. At this time, according to the movement of the contact member 21, the first rotating member 61 is rotated around the axis L1 via the pinion gear 61a meshed with the rack gear 21a. Since the second bevel gear 62a meshes with the first bevel gear 61b, the second rotary member 62 is rotated about the rotation axis L2 by this rotational movement. Due to the rotation of the second rotating member 62, the scalp hair is scraped by the protrusions 62b provided on the second rotating member 62, the scalp Hs is exposed, and the electrode unit 15 and the scalp Hs come into direct contact.

That is, according to the biological signal detection apparatus according to the present embodiment, the scalp is scraped only by performing the operation of putting the helmet 3 on the scalp Hs, the scalp Hs is exposed, and the electrode unit 15 and the scalp Hs are in direct contact. . Therefore, it is not necessary to scrape the hair in advance before bringing the electrode portion 15 close to the scalp Hs, and unnecessary labor is eliminated, so that the work related to the inspection can be simplified.
In this embodiment, the columnar protrusion 62b is used, but instead of this, a flat protrusion 64 may be used as shown in FIG.

Next, a biological signal detection apparatus according to a fifth embodiment of the present invention will be described with reference to FIGS. The biological signal detection device 70 according to the present embodiment is different from the first embodiment in that the electrode portion 15 and the V-shaped member (projecting portion) 72 are fixed to the inner surface of the helmet 71 facing the head H. .
As shown in FIG. 13A, the V-shaped member 72 is configured such that the V-shaped member 72 and the electrode portion 15 arranged in front of the electrode portion 15 in the direction in which the helmet 71 is attached (E direction) are alternately in the E direction. It is arranged along. Moreover, H1 shown in FIG.13 (b) is a head hair.

Next, a method for using the biological signal detection apparatus 70 configured as described above will be described.
As shown in FIG. 13B, the V-shaped member 72 disposed in front of the electrode unit 15 in accordance with the operation of attaching the helmet 71 to the head H scrapes the hair H1 around the electrode unit 15 and The surrounding scalp Hs is exposed, and the electrode part 15 is brought into contact therewith.
That is, according to the biological signal detection device 70 according to the present embodiment, the scalp is scraped only by performing the operation of putting the helmet 71 on the scalp Hs, the scalp Hs is exposed, and the electrode unit 15 and the scalp Hs are in direct contact with each other. To do. Therefore, it is not necessary to scrape the hair in advance before bringing the electrode portion close to the scalp Hs, and unnecessary labor is eliminated, so that the work related to the inspection can be simplified.

  Instead of the V-shaped member 72, as shown in FIG. 14, the protrusion 73 having a shape covering the electrode portion 15, or as shown in FIGS. 15 to 17, the helmet 80 has a V-shaped guide portion 81. And the electrode portions 15 may be alternately arranged along the mounting direction. At this time, the height of the surface facing the scalp Hs of the guide portion 81 from the surface of the helmet 80 facing the scalp Hs is equal to the height of the surface facing the scalp Hs of the electrode portion 15 or the height of the electrode portion 15. Higher is preferable.

Next, a biosignal detection device according to a sixth embodiment of the present invention will be described with reference to FIG. The biological signal detection device 90 according to the present embodiment is different from the first embodiment in that it includes a shape of the electrode portion 91 and a coil spring (flexible member) 92 that supports the electrode portion 91.
The electrode portion 91 has a ball shape that can contact the surface of the head H. The coil spring 92 has a wire shape (linear shape) in which one end 92 a is connected to the electrode portion 91 and the other end 92 b is connected to the main body 91 a of the electrode portion 91. Here, the main body 91 a is supported by the support member 13.

Next, a method of using the biological signal detection device 90 configured as described above will be described.
First, in the same manner as in the first embodiment, the helmet 3 is put on the head H, and the electrode portion 91 is brought into contact with the head H by being brought close to the head H, and further brought closer. Thereby, the coil spring 92 is bent, and the electrode portion 91 supported by the coil spring 92 is inserted so as to be divided between the heads H, and directly contacts the scalp Hs.
That is, according to the biological signal detection device 90 according to the present embodiment, the electrode portion 91 in contact with the scalp Hs is pressed against the scalp Hs by the elasticity of the bent coil spring 92, and the electrode can be further easily operated. It becomes possible to make the part 15 and scalp Hs contact directly.

  In the present embodiment, as shown in FIG. 19, the coil spring (elastic member) 93 that biases the electrode portion 15 toward the head H and the electrode portion 15 are arranged around the electrode portion 15 and infiltrated with an electrolyte solution. And a porous member 94 that can be elastically deformed. Here, the coil spring 93 has one end 93 a connected to the electrode portion 15 and the other end 93 b connected to the electrode portion main body 15 a supported by the support member 13. Moreover, as the porous member 94, what is excellent in water absorption is preferable, for example, nonwoven fabrics, such as cotton and felt, sponge, urethane, etc. are mentioned.

  In the case of this configuration, when the support member 13 is brought close to the head H and the porous member 94 infiltrated with the electrolyte solution and the electrode portion 15 are brought into contact with the head H, the electrolyte solution oozes from the porous member 94. When the support member 13 is further moved closer to the head H, the coil spring 93 exerts a resilient force, and the electrode portion 15 supported by the coil spring 93 is inserted into the hair, Directly touches the scalp Hs. Therefore, the electrode part 15 in contact with the scalp is secured to the scalp Hs by the exuded electrolyte solution and is pressed against the scalp Hs by the elastic force of the coil spring 93. It becomes possible to make the electrode part 15 and scalp Hs contact reliably.

  The technical scope of the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

It is the schematic which shows the whole structure of the biosignal detection apparatus which concerns on 1st Embodiment of this invention. In the biological signal detection apparatus according to FIG. 1, (a) the biological signal detection electrode is shown before coming into contact with the scalp, and (b) the main part sectional view showing a state where the biological signal detection electrode is in contact with the scalp. FIG. 2 is a cross-sectional view showing a modification of the biological signal detection electrode of FIG. 1, (a) before the biological signal detection electrode contacts the scalp, and (b) a state where the biological signal detection electrode contacts the scalp. It is sectional drawing which shows the other modification of the biosignal detection electrode of FIG. It is sectional drawing which shows the other modification of the biosignal detection electrode of FIG. It is sectional drawing which shows the other modification of the biosignal detection electrode of FIG. (A) of the biological signal detection electrode of the biological signal detection apparatus concerning 2nd Embodiment of this invention shows principal part sectional drawing, (b) is a top view in the XX arrow. (A) of the biological signal detection electrode of the biological signal detection apparatus which concerns on 3rd Embodiment of this invention shows principal part sectional drawing, (b) is a perspective view which shows a moving member. It is sectional drawing which shows the state which the biosignal detection electrode of FIG. 8 contacted the scalp. It is principal part sectional drawing which shows the biosignal detection electrode of the biosignal detection apparatus which concerns on 4th Embodiment of this invention. It is an enlarged plan view which shows the 2nd rotation member of FIG. FIG. 12 is an enlarged plan view showing another modification of the second rotating member in FIG. 10. (A) which shows the biological signal detection apparatus which concerns on 5th Embodiment of this invention is principal part sectional drawing, (b) is the schematic which shows the state which the scalp and the electrode part contacted. It is sectional drawing which shows the other modification of the protrusion part of the biosignal detection apparatus of FIG. It is sectional drawing which shows the other modification of the biosignal detection apparatus of FIG. It is principal part sectional drawing which shows the edge part of the biosignal detection apparatus of FIG. FIG. 15 is a plan view showing the inner surface of the helmet facing the head of the biological signal detection device of FIG. 14. It is the schematic which shows the biosignal detection apparatus which concerns on 6th Embodiment of this invention. (A) which shows the other modification of the biosignal detection apparatus of FIG. 17 is principal part sectional drawing, (b) is sectional drawing of the internal structure of an electrode part, (c) is X- of (b). It is a top view in a X-ray arrow.

Explanation of symbols

H Head 1,70,90 Biological signal detection device 3,71,80 Helmet (wearing member)
5, 40, 50, 60 Biological signal detection electrode 13, 51 Support member 15, 91 Electrode portion 17 Moving member 19, 41 Oscillation mechanism 27 Coil spring (biasing means)
29 Protruding part 31 Elastic member 33 Spherical part 56 Coil spring (biasing member)
63 Rotating mechanism 72 V-shaped member (protruding part)
81 Guide part (protruding part)
92 Coil spring (flexible member)
93 Coil spring (elastic member)
94 Porous material

Claims (12)

A support member that can be placed close to the head; and
An electrode unit that is supported by the support member and detects an electrical signal of the head in contact with the surface of the head;
The biological signal detection electrode, wherein the electrode part is supported by a support member so as to be swingable.   The biological signal detection electrode according to claim 1, wherein the support member is provided with an elastic member that is interposed between the electrode portion and supports the electrode portion.   The biological signal detection electrode according to claim 1, wherein a spherical portion is formed in the electrode portion, and the spherical portion is rotatably supported in contact with the support member. A moving member supported by the supporting member so as to be movable in a direction approaching or separating from the head; and
The biological signal detection electrode according to claim 1, further comprising a swinging mechanism that swings the electrode unit in accordance with the movement of the moving member.   The biosignal detection electrode according to claim 4, further comprising an urging unit that urges the electrode portion to avoid a predetermined position. A support member that can be placed close to the head; and
An electrode part that is supported by the support member and that detects the electrical signal of the head in contact with the surface of the head;
A biological signal detection electrode comprising: a projecting portion disposed around the electrode portion and provided to be rotatable around the electrode portion. A moving member supported by the supporting member so as to be movable in a direction approaching or separating from the head; and
The biological signal detection electrode according to claim 6, further comprising: a rotation mechanism that rotates the protrusion according to the movement of the moving member.   The biological signal detection electrode according to claim 6, further comprising a biasing member that biases the electrode portion toward the head. The biological signal detection electrode according to any one of claims 1 to 8,
A biological signal detection device comprising the electrode portion and a mounting member mounted on the head. An electrode for detecting an electrical signal of the head in contact with the surface of the head;
A mounting member having the electrode portion and mounted on the head;
A biological signal detection device comprising: a protruding portion disposed in front of the electrode portion in a direction to mount the mounting member. A support member that can be placed close to the head; and
An electrode part for detecting an electrical signal of the head in contact with the surface of the head;
A biological signal detection device comprising: a linear flexible member that is interposed between the support member and the electrode portion and supports the electrode portion. A support member that can be placed close to the head; and
An electrode part for detecting an electrical signal of the head in contact with the surface of the head;
An elastic member interposed between the support member and the electrode portion to support the electrode portion and bias the electrode portion toward the head;
A biological signal detection device comprising: a porous member disposed around the electrode portion and infiltrated with an electrolyte solution and elastically deformable.

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