PROBLEM TO BE SOLVED: To improve position accuracy of brain function mapping.SOLUTION: A measuring device includes: a stimulation instruction unit for giving an instruction to generate a plurality of stimuli according to reference points of brain form data in which at least three reference points are defined, to a stimulation device; and an estimation unit for estimating a brain activity expression site by the plurality of stimuli on the basis of a sensor output signal output from a sensor for measuring a brain activity signal of a measured person, who is a measurement target.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】脳機能マッピングの位置精度を向上させる。【解決手段】刺激装置に対して、少なくとも3点の参照点が定義された脳形態データの参照点に応じた複数の刺激を生成させる指示を行う刺激指示部と、計測対象である被計測者の脳活動信号を計測するセンサから出力されるセンサ出力信号に基づいて前記複数の刺激による脳活動発現部位を推定する推定部と、を備える。【選択図】図3