JP2015221144A - Headgear for brain wave measurement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a headgear for brain wave measurement fitted to various shapes of persons' heads and preventing strong pressure from being applied to a specific site of the head part.SOLUTION: The headgear for brain wave measurement includes a substantially semicircular outer shell 4, a belt-like body 2 having an electrode 3, a plurality of first elastic bodies 7a. A headgear outer shell 10 in which one ends of the plurality of first elastic bodies 7a are connected to both ends of the outer shell 4 respectively is provided. Both ends of the belt-like body 2 and/or the other end of the plurality of second elastic bodies 7b, the respective ends of which are connected to both ends of the belt-like body 2 respectively, are further connected to the headgear outer shell part 10. The headgear for the brain wave measurement can measure brain waves of persons whose heads have various shapes, at a desired position without any pain.

Description

  The present invention relates to an electroencephalogram measurement headgear.

  In order to measure an electroencephalogram, the electroencephalogram measurement electrode needs to contact the scalp. At present, a form generally used as a multi-channel electroencephalogram measurement method is that an electrode headgear is provided with a large number of electroencephalogram measurement electrodes, and the electrode headgear is attached to perform measurement. As conventional electroencephalogram measurement headgear, first, electrode headgear that covers the entire head as described above can be cited. The electrode headgear covering the entire head is often used in such a manner that many electrodes are attached to the inner side of the swimming cap in order to enable measurement of brain waves from various places on the scalp (for example, Patent Document 1). However, the electrode headgear that covers the entire head is different from person to person in the shape of the head. Therefore, the electrode headgear may not fit in the shape of the head particularly in the back of the head, and the electrode may float.

  As another form of the conventional brain wave measuring headgear, there is a headgear that performs measurement with only a part of the head, particularly the forehead (for example, Patent Documents 2 and 3). An electroencephalograph in the forehead is used for an electroencephalograph for simple measurement, not for medical or research and development. In this case, there are those in which only one channel is brought into contact with the forehead, or those in which multiple channels are brought into contact with the forehead. However, in the electroencephalogram measurement with the forehead, the face is close, so noises such as electrooculosis and myoelectricity are likely to be mixed.

JP 2002-177231 A Japanese Patent Publication No. 61-55970 Japanese Utility Model Publication No. 6-70704

Internet homepage, g.tec medical engineering [searched on February 17, 2014] “g. Nautilus with g. SAHARA active drive e- commerce” http: // www. gtec. at / Products / Hardware-and-Accessories / g. NAUTILUS-Specs-Features

  In the above-described conventional electroencephalogram measurement headgear, when a conductive gel is used, even if the electroencephalogram measurement headgear does not fit to the shape of the head to some extent, the gel is used to electrically connect the electrode and the scalp. Can be brought into contact with each other. However, assuming use in BMI (Brain-Machine Interface) or the like, and using a gel-free dry electrode with excellent usability that does not require hair washing, it is necessary to fit the headgear to the head more. Also, in order to fit all the electrodes attached to the headgear to the head, it is necessary to press the headgear against the head, but when the pressure distribution varies greatly from electrode to electrode, the electrode is pressed against the scalp at high pressure parts. I feel pain.

  In particular, a strong pressure is applied to the side face in the above-described headgear type in which measurement is performed using only a part of the head, particularly the forehead. Therefore, when an electrode is attached to the temporal region, pain is caused to the user, so that it is difficult to measure the temporal brain wave. The U-shaped spring portion of the bioelectrode holding device according to the invention of Patent Document 2 is formed smaller than the size of the head as in a general headphone. Therefore, when the user wears the bioelectrode holding device, it is fixed to the head by the restoring force of the U-shaped spring portion. In this case, since the force applied to the temporal region is large, when the electrode is mounted on the temporal region, pain is caused to the user. Since the pressure applied to the user's temporal region from the headband portion of the electroencephalogram electrode mounting tool is also large in the device related to Patent Document 3, the inventions and devices disclosed in Patent Documents 1 and 2 are equipped with electrodes only on the forehead portion. I can only do it. In addition, the inventions and devices disclosed in Patent Documents 1 to 3 and Non-Patent Documents include a hole formed in a portion corresponding to the electrode position of the headgear, biological electrode holding device, and electroencephalogram electrode mounting tool, and the headgear or biological electrode. There is no description of adjusting the restoring force of the holding device and the electroencephalogram electrode mounting tool.

  The present invention has been made in view of the above circumstances, and fits the shape of various human heads, and by reducing the force applied to the outer side from the force applied to the inner side of the head, An object of the present invention is to provide an electroencephalogram headgear that does not apply a strong pressure to a specific part.

In order to solve the above problems, an electroencephalogram measurement headgear according to the present invention has a substantially semicircular outer shell, a belt-like body including electrodes, and a plurality of first elastic bodies, and the plurality of first elastic bodies. There is a headgear outer shell part in which one end of each is connected to both ends of the outer shell,
The other end of each of the plurality of second elastic bodies, each having one end connected to both ends of the strip and / or both ends of the strip, is further connected to the headgear outer shell.

  In the present invention, the belt-like body is located inside the substantially semicircular outer shell.

  The brain wave measuring headgear of the present invention has a substantially semicircular outer shell and a plurality of third elastic bodies, and one end of each of the plurality of third elastic bodies is disposed at both ends of the outer shell. Each of the plurality of third elastic bodies is connected to each other and includes an electrode.

  According to the present invention, the substantially semicircular outer shell is made of an elastic member and has a larger diameter than the user's head, and a hole is formed in a side surface of the substantially semicircular outer shell. It is characterized by that.

  Further, the present invention is characterized in that the size of the hole portion of the substantially semicircular outer shell can be adjusted.

  Further, in the present invention, any of the plurality of first elastic bodies, the plurality of second elastic bodies, and the plurality of third elastic bodies includes an adjustment unit, and the plurality of first elastic bodies are adjusted by the adjustment unit. The lengths of the elastic body, the plurality of second elastic bodies, and the plurality of third elastic bodies can be adjusted.

The electroencephalogram measurement headgear of the present invention is a substantially semicircular outer shell, a belt-like body comprising electrodes,
There is a headgear outer shell portion having a plurality of first elastic bodies, each end of which is connected to both ends of the outer shell, and / or both ends of the belt-shaped body and / or Since the other ends of the plurality of second elastic bodies, each having one end connected to both ends of the belt-like body, are further connected to the headgear outer shell, no strong pressure is applied to a specific part of the head. .

  In the present invention, the band-shaped body is located inside the substantially semicircular outer shell, and thus the electrode fits various head shapes.

  The electroencephalogram measurement headgear of the present invention has a substantially semicircular outer shell and a plurality of third elastic bodies, and one end of each of the plurality of third elastic bodies is provided at each end of the outer shell. Since the plurality of third elastic bodies are connected to each other and have electrodes, brain waves can be measured even in the frontal region.

  In the present invention, the substantially semicircular outer shell is made of an elastic member and has a larger diameter than the user's head, and a hole is formed in a side surface of the substantially semicircular outer shell. Therefore, the restoring force to the outside of the outer shell can be adjusted.

  In the present invention, since the size of the hole portion of the substantially semicircular outer shell can be adjusted, it is possible to provide an electroencephalographic headgear that can be easily worn by a user.

  In the present invention, each of the plurality of first elastic bodies, the plurality of second elastic bodies, and the plurality of third elastic bodies has an adjusting means, and the adjusting means uses the plurality of first elastic bodies. The length of any of the elastic body, the plurality of second elastic bodies, and the plurality of third elastic bodies can be adjusted, so that the electrodes placed on the belt-like body are securely fixed to the scalp The brain waves can be measured.

It is a figure explaining the headgear for electroencephalogram measurement of this invention, (a) is the figure which looked at the headgear for electroencephalogram measurement of this invention from the upper direction. (B) is the figure which the user equipped with the headgear for electroencephalogram measurement of this invention, and was seen from back. It is the figure which the user wore the headgear for electroencephalogram measurement of this invention, and was seen from the front, (a) is a figure in the case of measuring the electroencephalogram of a temporal region, a occipital region, and a parietal region. (B) is a figure in the case of measuring the brain wave of a frontal head. It is explanatory drawing which shows the magnitude | size of the force concerning the head gear for electroencephalogram measurement of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  A brain wave measuring headgear 1 according to the present invention will be described with reference to FIG.

  Fig.1 (a) is the figure which looked at the headgear 1 for electroencephalogram measurement of this invention from the upper direction. FIG. 1B is a view of the brain wave measuring headgear 1 according to the present invention as viewed from the back with the user wearing it.

  In FIG. 1A, a brain wave measuring headgear 1 according to the present invention includes a belt-like body 2 and a substantially semicircular outer shell 4. The strip 2 is made of a soft material such as plastic. An electrode 3 for electroencephalogram measurement is attached to the strip 2 so that the tip 3b of the electrode 3 contacts the human scalp during electroencephalogram measurement. Further, the headgear outer shell portion 10 is formed by connecting one end of each of the two first elastic bodies 7a such as rubber bands to the both ends of the outer shell 4 with fasteners 6a.

  Both ends of the band-like body 2 used for the measurement of the electroencephalogram of the temporal region and the back of the head are connected to both ends of the outer shell 4 of the headgear outer shell 10 by fasteners 6c. In FIG. 1A, the lower part is the front, that is, the face part. On the other hand, when measuring an electroencephalogram at the top of the head or the like, one end of each of the two second elastic bodies 7b is connected to each end of the belt-like body 2 with a fastener 6b, and the other end of each of the two elastic bodies 7b. Are connected to two lower portions of the outer shell 4 of the headgear outer shell 10 by fasteners 6c.

  The outer shell 4 is formed in a substantially semicircular shape using an elastic member such as plastic. When the user does not wear the electroencephalogram measurement headgear 1, the length L of both end portions of the outer shell 4 is made longer than the width of the user's head.

  In FIG. 1B, a plurality of substantially square holes 5 are provided on the side surface of the outer shell 4. The hole 5 is formed in a position where the metal plate portion 3a of the electrode 3 is located from the outside of the electroencephalogram measurement headgear 1 and is installed in the band 2 located inside the outer shell 4 of the electroencephalogram measurement headgear 1. ing. A lead wire 8 is connected to the electrode 3. The shape of the hole 3 is not limited to a substantially square shape, but may be other shapes. Further, when measuring an electroencephalogram such as the top of the head, both ends of the belt-like body 2 can be directly connected to the outer shell 4 of the headgear outer shell portion 10 without using the second elastic body 7b.

  Here, the belt-like body 2 to which the electrode 3 is attached is made of a soft material. Therefore, when the belt-like body 2 is fitted to the user's head, the tip 3b of the electrode 3 can be brought into contact with the scalp, and conduction between the electrode 3 and the scalp is ensured for various head shapes. It leads to things.

  As described above, since a plurality of substantially rectangular holes 5 are provided on the side surface of the outer shell 4, the position of the electrode 3 of the band-like body 2 used in the side and back of the head can be confirmed from the outside. The position of the electrode 3 can be finely adjusted while the brain wave measuring headgear 1 is attached. Further, by adjusting the size of the hole 5, the magnitude of the restoring force to the outside of the outer shell 4 can be freely adjusted. This restoring force will be described in detail later. Further, since the outer shell 4 is easily bent by adjusting the size of the hole portion 5, the user can easily wear the brain wave measuring headgear 1.

  Here, although the belt-like body 2 is installed in the user's temporal region, occipital region, and top of the head, only the belt-like body 2 or the top of the head using the belt-like body 2 and the second elastic body 7b. In addition, an electroencephalogram can be measured at a desired position on the head. As shown in FIGS. 1 (a) and 1 (b), the position of the electrode 3 of the strip 2 can be confirmed from the outside even when the brain waves at the top of the head are measured.

  Based on FIG. 2A, a case where the user wears the electroencephalogram headgear 1 and measures the electroencephalograms of the temporal region, the occipital region and the parietal region will be described.

  The two first elastic bodies 7a installed in the headgear outer shell portion 10 of the headgear 1 for electroencephalogram measurement are adjusted by adjusting the length according to the shape of the user's forehead by adjusting means 9 such as an adjuster. The first elastic body 7a can be fixed to the forehead. Note that the second elastic body 7b connected to the belt-like body 2 used for measuring the brain wave at the top of the head is also adjusted by the adjusting means 9 as shown in FIG. The length can be adjusted according to the shape of the user's head.

  Thus, by adjusting the lengths of the first elastic body 7a and the second elastic body 7b by the adjusting means 9, the first elastic body 7a and the second elastic body 7b expand and contract, The belt-like body 2 connected to the first elastic body 7a and the outer shell 4, the fastener 6c, and the belt-like body 2 connected to the second elastic body 7b are fixed to the user's head. . Therefore, the electrode 3 installed on the belt-like body 2 fits more securely to the user's head, which is useful for measuring brain waves with respect to various head shapes.

  Based on FIG. 2B, a case where the user wears the brain wave measuring headgear 1 and measures the brain waves in the frontal region will be described.

  One ends of a plurality of third elastic bodies 7c are connected to both ends of the outer shell 4, and the electrodes 3 are directly installed on the third elastic bodies 7c. Therefore, the frontal brain waves can be measured by the third elastic body 7c. The belt-like body 2 or one having a plurality of second elastic bodies 7b connected to both ends of the belt-like body 2 shown in FIG. By connecting both ends of each of the second elastic bodies 7b to the headgear outer shell 10, the brain waves of the frontal region are measured using the third elastic body 7c, and at the same time, An electroencephalogram at a desired position of the head such as a head can be measured. In this case as well, the belt-like body 2 is positioned inside the outer shell 4 as described above. The other parts such as the length of the third elastic body 7c being adjusted by the adjusting means 9 are the same as those in FIG.

  Based on FIG. 3, the restoring force of the outer shell 4 when the brain wave measuring headgear 1 is mounted will be described.

  When the electroencephalogram measuring headgear 1 is attached to the head, in FIG. 1A, the band-like body 2 to which the electrode 3 is attached is in contact with the user's temporal region and occipital region, and the first elasticity of the headgear outer shell 10 is obtained. The body 7a comes to the forehead as shown in FIG. As described above, when the length of the first elastic body 7a of the headgear outer shell portion 10 is adjusted by the adjusting means 9 so as to expand and contract in accordance with the shape of the user's forehead, the first gear of the headgear outer shell portion 10 is adjusted. Since the elastic body 7a is curved along the shape of the forehead, the forces F1, F2, and F3 in FIG. 3 act inward from the first elastic body 7a toward the user's head. At this time, the magnitude of the forces F2 and F3 applied to the user's temporal region is greater than the force of F1 applied to the user's frontal apex. That is, pain is felt in the portions F2 and F3. Therefore, in the case where there is no outer shell 4 and only the belt-like body 2 and the first elastic body 7a, it is difficult to measure the electroencephalogram by installing the electrode 3 in the portion corresponding to the temporal region.

  On the other hand, as described above, the electroencephalogram measurement headgear 1 is formed so that the length L of both end portions of the outer shell 4 is longer than the width of the user's head when not worn. However, when the user adjusts the first elastic body 7a of the headgear outer shell portion 10 so as to expand and contract in accordance with the shape of the user's forehead by the adjusting means 9, the first elastic body 7a and the fastener The outer shell 4 connected by 6a is pulled inward, that is, toward the user's head. Then, since the outer shell 4 bends in the direction of the user's head, the forces F4 and F5 act outward as the restoring force of the outer shell 4.

  Thereby, the force applied to the user's temporal region is obtained by subtracting F4 and F5, which are forces toward the outside of the head, from F2 and F3, which are forces toward the inside of the head, respectively. That is, by using the force toward the outside of the outer shell 4, the strong force toward the inside of the head from the first elastic body 7a is weakened. Therefore, a strong pressure is not applied to a specific part of the head such as the temporal region. Therefore, it is possible to measure an electroencephalogram with respect to the temporal region or the like by the band-like body 2 connected to the headgear outer shell portion 10, and no pain is felt at that time.

  Further, the restoring force of the outer shell 4 can be adjusted by adjusting the size of the hole 5 of the outer shell 4. That is, when the size of the hole portion 5 is increased, the outer shell 4 is easily bent toward the inside of the head portion, so that the restoring force to the outside of the outer shell 4 is weakened. On the other hand, when the size of the hole 5 is reduced, the restoring force to the outside of the outer shell 4 is increased. Since the restoring force of the outer shell 4 as a whole can be changed by adjusting the size of the hole portion of the outer shell 4 in this way, it is stronger than the first elastic body 7a on a specific part of the head. The pressure can be adjusted appropriately. Therefore, the user of the brain wave measuring headgear 1 can measure an electroencephalogram without feeling pain and while bringing the electrode 3 into contact with the scalp with an appropriate pressure.

  On the other hand, also about the strip | belt-shaped body 2 shown by FIG. 1 (a) and FIG. 1 (b) used at the top, each one end of the two 2nd elastic bodies 7b at the both ends of the said strip | belt-shaped body 2 is shown. Are connected, and the other ends of the two second elastic bodies 7b are connected to the lower part of the outer shell 4 of the headgear outer shell 10 by fasteners 6c. Accordingly, the restoring force of the outer shell 4 toward the outside of the head weakens the force toward the inside of the head by the two second elastic bodies 7b, and no strong pressure is applied to a specific part of the head. Accordingly, by appropriately selecting the position where the band 2 is installed in the head wave 1 for electroencephalogram measurement, it becomes possible to measure the electroencephalogram without the user feeling pain at a desired part of the head.

  In addition, also when measuring an electroencephalogram with a frontal head without using the strip | belt-shaped body 2 shown by FIG.2 (b), similarly to the 1st elastic body 7a, the head by two 3rd elastic bodies 7c Is reduced by the restoring force of the outer shell 4 toward the outside of the head. Therefore, it becomes possible to measure an electroencephalogram without the user feeling pain even in the frontal region.

  As mentioned above, although embodiment which concerns on this invention was described, this invention is not limited to this embodiment, Of course, it can implement in a various aspect in the range which does not deviate from the summary. For example, the width of the outer shell 4 can be adjusted. In addition, the number of electrodes installed on the belt-like body 2 can be freely changed.

DESCRIPTION OF SYMBOLS 1 Headgear for electroencephalogram 2 Band-shaped body 3 Electrode 3a Metal plate part 3b Tip part 4 Outer shell 5 Hole 6a Fastening 6b Fastening 6c Fastening 7a First elastic body 7b Second elastic body 7c Third elastic body 8 Lead wire 9 Adjustment means 10 Headgear outer shell

Claims (6)

A substantially semi-circular outer shell,
A strip with electrodes;
A plurality of first elastic bodies;
There is a headgear outer shell portion in which each one end of the plurality of first elastic bodies is connected to both ends of the outer shell,
A headgear for measuring an electroencephalogram, characterized in that both ends of the belt-like body and / or each other end of a plurality of second elastic bodies each having one end connected to both ends of the belt-like body are further connected to the headgear outer shell.   The headband for electroencephalogram measurement according to claim 1, wherein the belt-like body is located inside the substantially semicircular outer shell. A substantially semi-circular outer shell,
Having a plurality of third elastic bodies;
Each one end of the plurality of third elastic bodies is connected to both ends of the outer shell,
The brain wave measuring headgear, wherein the plurality of third elastic bodies include electrodes.   The substantially semicircular outer shell is made of an elastic member and has a larger diameter than a user's head, and a hole is formed on a side surface of the substantially semicircular outer shell. The headgear for electroencephalogram measurement according to any one of claims 1 to 3.   The brain wave measuring headgear according to any one of claims 1 to 4, wherein a size of the hole of the substantially semicircular outer shell can be adjusted.   Each of the plurality of first elastic bodies, the plurality of second elastic bodies, and the plurality of third elastic bodies has an adjusting means, and the adjusting means allows the plurality of first elastic bodies, The headgear for measuring an electroencephalogram according to any one of claims 1 to 5, wherein the lengths of the plurality of second elastic bodies and the plurality of third elastic bodies can be adjusted.