把持型グリップによる圧力刺激の方向弁別閾の測定

抄録

This paper reports on direction discrimination thresholds at three areas on a palm. The stimuli used to measure the thresholds were pressure stimuli provided using a rectangular-shaped indentor. Previous studies have shown that pressure stimulation can invoke pseudo-force sensations at various areas on a palm, and devices that can present such stimuli have been developed. Understanding the threshold is important for the applications of such devices. Although two-point threshold and point localization of a palm have been investigated using point stimuli in the literature, discrimination ability for rectangular-shaped stimuli has not been clarified. Measurements of discrimination ability revealed that the direction discrimination thresholds were approximately 6.1 to 9.2 degrees, although they differed for each of the three palm regions.