2P2-B35 人差し指で硬さの異なる物体を押し込んだ際の硬さ感覚 : 系列カテゴリ法を用いたヒトの指先の硬さ感覚の定量化

概要

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Hardness discrimination is one of the important tactile senses. We have a perception of discriminating the hardness of objects by transmitting mechanical stimuli (such as reaction force, somatic sensation, and area of contact) to brain. However, hardness sensations (such as hard, neither, soft and so on) are hardly clarified. In this study, we quantified ability to clarify hardness sensation by the method of successive categories. We presented 14 test-pieces with different hardness to 10 participants. The participants were asked to answer the hardness of the presented test-pieces by 7 stages of hardness sensations (extremely soft, fairly soft, slightly soft, neither, slightly hard, fairly hard, extremely hard). As the results, the hardness sensation correlates directly with the strength of mechanical stimuli. And also, we found the range of each hardness sensation quantitatively.
一般社団法人日本機械学会の論文