Headband, headgear and brain wave measuring device

摘要

PROBLEM TO BE SOLVED: To provide a headband capable of correctly placing electrodes on a head of a user, a headgear including the headband, and an electroencephalographic apparatus including the headgear.SOLUTION: The headgear 11 includes the headband 111 and the electrodes 114. The headband includes a first headband portion 111a arranged from the forehead of a user to a part above the back of the head of the user; a second headband portion 111b connected to the first headband portion and arranged from the part above the back of the head of the user to the right mastoid of the user after perpendicularly intersecting with the first headband portion; and a third headband portion 111c connected to the first headband portion and arranged from the part above the back of the head of the user to the left mastoid of the user after perpendicularly intersecting with the first headband portion. The electrodes are arranged in the headband and have contact with the surface of the head of the user.