PROBLEM TO BE SOLVED: To provide an interference effect measuring technology based on an index different from prior art, and an audiometric technique using the interference effect.SOLUTION: A perception sensitivity evaluation device 1 includes an input information acquisition part 14 that, when a sound stimulus that changes with time and a light stimulus that changes with time are presented to a subject, acquires the time sequence of motion information on the subject responding in accordance with the change in the light stimulus while the subject is listening to the presented sound stimulus, and an interference effect measuring part 15 that, when a difference between the time sequence of the change in the sound stimulus and the time sequence of the change in the light stimulus is called a stimulus difference, measures an interference effect based on a difference between the time sequence of the change in the light stimulus and the time sequence of the motion information in a predetermined stimulus difference, and if the interference effect is generated, determines that the sound stimulus is perceived.SELECTED DRAWING: Figure 9COPYRIGHT: (C)2016,JPO&INPIT【課題】従来技術とは異なる指標に基づく妨害効果測定技術及びその妨害効果を利用する聴力測定技術を提供する。【解決手段】知覚感度評価装置1は、対象者に対して、時間的に変化する音刺激と時間的に変化する光刺激とが呈示されるものとし、呈示される音刺激を聴きながら、光刺激の変化に合わせて反応する対象者の運動情報の時系列を取得する入力情報取得部14と、音刺激の変化の時系列と光刺激の変化の時系列との差分を刺激差分とし、所定の刺激差分における、光刺激の変化の時系列と運動情報の時系列との差分に基づいて妨害効果を測定し、妨害効果が生じている場合には音刺激を知覚していると判断する妨害効果測定部15とを含む。【選択図】図9
