PROBLEM TO BE SOLVED: To provide a multiple-brain activation observation system allowing evaluation of the degree of sympathy by evaluating synchronism of brains of a plurality of test subjects.SOLUTION: This multiple-brain activation observation system includes: measurement communication modules 100 each irradiating light to a specific region of a test subject 300, each detecting passage light from the test subject, each obtaining a brain activity signal of the test subject, and each transmitting it to a centralized controller and the centralized controller 200 receiving the brain activity signals of the plurality of test subjects from the plurality of measurement communication modules, and analyzing and displaying them. The centralized controller 200 includes correlation degree calculation parts each calculating a correlation degree such as a correlation coefficient, a t value, or an ANOVA value between a reference signal and each of the received brain activity signals of the plurality of test subjects, and performs the display based on the calculated correlation degrees.COPYRIGHT: (C)2013,JPO&INPIT【課題】複数の被験者の脳の同期性を評価し、共感の度合いを評価することができる複数脳賦活観測システムを提供する。【解決手段】被験者300の特定の部位に光を照射し、前記被験者からの通過光を検出して、前記被験者の脳活動信号を得て、集中制御装置に伝送する計測通信モジュールと100、複数の前記計測通信モジュールから、複数の被験者の脳活動信号を受信して、解析・表示する前記集中制御装置200を備えた複数脳賦活観測システムにおいて、前記集中制御装置200は、前記受信した複数の被検者の脳活動信号のそれぞれと参照信号との相関係数、t値、ANOVA値等の相関度を算出する相関度算出部を備え、算出した相関度に基づいて表示するように構成した。【選択図】 図1