BRAIN FUNCTION MEASUREMENT APPARATUS, AND MEASUREMENT PROBE FOR BRAIN FUNCTION MEASUREMENT APPARATUS

PROBLEM TO BE SOLVED: To provide a brain function measurement apparatus capable of preventing a subject from hardly feeling pain when a measurement probe is brought into contact with a head part surface at a hairless area, while easily bringing the measurement probe into contact with the head part surface at a hairy area.SOLUTION: An optical measurement apparatus (the brain function measurement apparatus) includes a plurality of measurement probes to be disposed on the head 101 of the subject, and a body part connected to each of the plurality of measurement probes and performing the measurement via the measurement probes. The plurality of measurement probes include a first probe that has a first contact part at a tip end part 20a of the head side of the subject, and a second probe having a second contact part 40 in which an area in the head surface side of the subject is larger than that of the first contact part. 【課題】有毛部において計測プローブを頭部表面に容易に接触させながら、無毛部において計測プローブを頭部表面に接触させる際の痛みを被験者に感じにくくすることが可能な脳機能計測装置を提供する。【解決手段】光計測装置（脳機能計測装置）は、被験者の頭部１０１に配置される複数の計測プローブと、複数の計測プローブの各々と接続され、計測プローブを介して計測を行う本体部とを備える。複数の計測プローブは、被験者の頭部側の先端部２０ａにおいて、第１接触部を有する第１プローブと、被験者の頭部表面側の面積が第１接触部よりも大きい第２接触部４０を有する第２プローブとを含む。【選択図】図４