JP-2026075455-A - Electroencephalogram (EEG) measuring device

Abstract

[Problem] To provide a technology that allows electroencephalogram (EEG) measurements to be taken even when the subject is lying down or in a position where force is acting on the EEG measuring device. [Solution] An electroencephalogram (EEG) measuring device 10 is provided, comprising a support 110 body divided into multiple pieces and attached to a head 20, and an electrode unit 120 held by the support 110, wherein the multiple pieces include an anterior piece 200 on the frontal side and a posterior piece 300 on the occipital side, and a dividing line (A) 401 dividing the anterior piece 200 and the posterior piece 300 passes between the electrode positions Cz and Pz, T3 and T5, C3 and P3, T4 and T6 and C4 and P4 respectively in the International 10-20 electrode placement method. [Selection Diagram] Figure 6

Inventors

• 山中 健介
• 北添 雄眞
• 八木澤 隆
• 中村 健太郎
• 浮城 一司
• 中里 信和
• 神 一敬
• 石田 誠

Assignees

• 住友ベークライト株式会社
• 国立大学法人東北大学

Dates

Publication Date

20260508

Application Date

20241022

Claims (5)

1. A support structure, divided into multiple pieces, that is attached to the head, The electrode unit held in the support, It has, The plurality of aforementioned pieces include a front piece on the forehead side and a rear piece on the back of the head side. An electroencephalogram (EEG) measuring device in which the dividing line (A) separating the front piece and the rear piece passes between Cz and Pz, T3 and T5, C3 and P3, T4 and T6, and C4 and P4 respectively in the international 10-20 electrode placement method.
2. The aforementioned rear piece comprises at least a first rear piece and a second rear piece. The electroencephalogram measuring device according to claim 1, wherein the dividing line (B) separating the first posterior piece and the second posterior piece passes between O1 and O2 in the international 10-20 electrode arrangement.
3. The aforementioned rear piece has a third rear piece in addition to the first rear piece and the second rear piece. The first rear piece has O1, T3 and P3 in the international 10-20 electrode arrangement method, The second rear piece has O2, T6 and P4 in the international 10-20 electrode arrangement method, The third rear piece has Pz in the international 10-20 electrode arrangement method. The electroencephalogram measuring device according to claim 2.
4. The aforementioned front piece is divided into at least three pieces, The three pieces mentioned above are, A first forward piece containing Cz in the international 10-20 electrode arrangement method, The second forward piece including T3 in the international 10-20 electrode arrangement method, The third forward piece including T4 in the international 10-20 electrode arrangement method, An electroencephalogram measuring device according to claim 1, having the following features.
5. The aforementioned front piece is divided into at least five pieces, The five pieces include the first front piece, the second front piece, and the third front piece, as well as a fourth front piece and a fifth front piece. The fourth front piece is provided between the first front piece and the second front piece and includes C3 and F3 in the international 10-20 electrode arrangement method. The fifth front piece is provided between the first front piece and the third front piece and includes C4 and F4 in the international 10-20 electrode arrangement method. The electroencephalogram measuring device according to claim 4.

Description

This invention relates to an electroencephalogram (EEG) measurement device. In electroencephalography (EEG), electrodes are placed in contact with the head to perform electrical measurements. Patent Document 1 describes measuring electroencephalograms by bringing the tip of an electrode pin supported by an elastic member into contact with the scalp. Japanese Patent Publication No. 2020-000268 This figure illustrates a partial cross-section of an electroencephalogram (EEG) measuring device according to an embodiment.This figure illustrates a partial cross-section of an electroencephalogram (EEG) measuring device worn on the head according to the embodiment.This figure illustrates a cross-section of an electrode unit according to an embodiment.This is a side view illustrating the support according to the embodiment in a state in which it is attached to a person's head.This is a perspective view illustrating the support according to the embodiment in a state in which it is attached to a person's head.This figure illustrates the eight divided pieces of the support according to the embodiment and the positions of the electrode units according to the International 10-20 Electrode Arrangement Method.This figure shows the compression SS curve of the cushioning material provided between pieces of the support according to the embodiment.This figure illustrates the two-part support piece and the position of the electrode unit according to the International 10-20 Electrode Arrangement Method in Modification 1.This figure illustrates the four divided support pieces of Modification 2 and the positions of the electrode units according to the International 10-20 Electrode Arrangement Method.This diagram illustrates the six divided support pieces of Modification 3 and the positions of the electrode units according to the International 10-20 Electrode Arrangement Method. Embodiments of the present invention will be described below with reference to the drawings. In all drawings, similar components are denoted by the same reference numerals, and their descriptions are omitted as appropriate. First, we will describe the basic form of an electroencephalogram (EEG) measurement device in which EEG electrodes are attached to a helmet-shaped support. Next, we will illustrate a configuration in which the helmet-shaped support is divided into multiple pieces, specifically an eight-part configuration. <Basic configuration of an electroencephalogram (EEG) measuring device> <Overview> Figure 1 is a diagram illustrating a partial cross-section of the electroencephalogram (EEG) measuring device 10 according to an embodiment. Figure 2 is a diagram illustrating a partial cross-section of the EEG measuring device 10 according to an embodiment, illustrating the state in which the EEG measuring device 10 of Figure 1 is attached to the head 20 (the electrode unit 120 is pressed against the scalp 22). Figure 3 is a diagram illustrating a cross-section of the electrode unit 120. In this embodiment, the electrode unit 120 is placed at the electrode positions defined by the International 10-20 Electrode Placement Method. Referring to Figures 1-3, a basic form of electroencephalogram (EEG) measurement device, in which EEG electrodes are attached to a helmet-type support, will be described. The electroencephalogram (EEG) measuring device 10 comprises a support body 110, a support body elastic member 130, a holding part 180, and an electrode unit 120. EEG is measured by bringing the electrode unit 120 of the EEG measuring device 10 into contact with the head 20 (scalp 22). The electrode unit 120 is attached to the support body elastic member 130 via the holding part 180 and held by the support body 110. As will be described in detail later, the support 110 is, for example, a helmet-type support worn on the head 20, and has a support through-hole 114 that penetrates from the inside to the outside, and a support elastic member 130 embedded in the support through-hole 114. The electrode unit 120 is held on the bottom surface 132 of the support elastic member 130 via a holding portion 180. The support 110 is divided into multiple pieces. In this embodiment, an eight-part support 110 is shown as an example, but the specific configuration will be described later. The support elastic member 130 is provided with a recessed elastic member recess 131 extending from the surface to the bottom. The elastic member recess 131 communicates with the support through-hole 114. By inserting a finger or the like into the elastic member recess 131 through the support through-hole 114, the support elastic member 130 can be manipulated, or the holding part 180 attached to the support elastic member 130 can be manipulated to adjust the orientation of the electrode unit 120, etc. The support 110 is helmet-shaped. When the support 110 is helmet-shaped, it has a recess for inserting the head 20. The electroencephalogram (EEG) measuring device 10 is configured such that, with the