PROBLEM TO BE SOLVED: To provide a device for assisting an evaluation of a transient state of sensory reweighting.SOLUTION: An index value calculation device 30 includes a fluctuation amount acquisition unit 36 for acquiring a fluctuation amount which is an amount on a fluctuation of a subjects posture, a timing acquisition unit 35 for acquiring a switching timing of a generation condition of a stimulus given to a sensory organ that receives a stimulus on a balance sense of the subject, and an index value calculation unit 37 for calculating an index value on the balance sense of the subject on the basis of a change in a fluctuation amount before and after the switching timing of the generation condition.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2017,JPO&INPIT【課題】sensory reweightingの過渡状態の評価を補助する装置を提供する。【解決手段】指標値算出装置30は、被検者の姿勢の変動に関する量である変動量を取得する変動量取得部36と、被検者の平衡感覚に関する刺激を受容する感覚器に与える刺激の発生条件の切り替えタイミングを取得するタイミング取得部35と、発生条件の切り替えタイミングの前後における変動量の変化に基づいて被検者の平衡感覚に関する指標値を算出する指標値算出部37とを備える。【選択図】図4
