PROBLEM TO BE SOLVED: To provide a brain function measuring device and a brain function measuring electrode that can measure an electroencephalogram signal with high accuracy while reducing a burden to a subject.SOLUTION: A brain activity measuring device includes: a light emitting part 20 detained in a position opposed to the measured region in the skull of a subject and irradiating the measured region with light a light receiving part 21 for receiving the light propagating the measured region two or more sensor units 4 having an electrode 22 for measuring a brain wave through the measured region and a communication unit 5 provided separately from the two or more sensor units 4, and communicating to each sensor unit 4 in a non-contact manner and supplying electric power. Each sensor unit 4 includes the light emitting part 20, the light receiving part 21 and the electrode 22, and additionally, an electric circuit 15 is built therein which comprises a transmitting and receiving part 24 for transmitting and receiving a signal between a communication unit 5 and itself, and a power receiving part for receiving electric power transmitted from the communication unit 5.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2016,JPO&INPIT【課題】被験者に対する負担を軽減しつつ、脳波信号を高精度に計測することができる脳機能計測装置及び脳機能計測用電極を提供する。【解決手段】脳活動計測装置は、被験者の頭蓋骨内の被計測領域に対向する位置に留置され、被計測領域に光を照射する発光部20と、被計測領域を伝搬した光を受光する受光部21と、被計測領域を介して脳波を計測する電極22とを有する複数のセンサユニット4と、複数のセンサユニット4と別体に設けられ、当該各センサユニット4に対して非接触で通信するとともに電力を供給する通信ユニット5と、を備える。各センサユニット4には、発光部20、受光部21及び電極22に加えて、通信ユニット5との間で信号を送受信する送受信部24と、通信ユニット5から送電された電力を受電する受電部とを含む電気回路部15が内蔵されている。【選択図】図4
