Tactile evaluation and individual difference analysis focused on temporal change

Tactile sensation changes with time, there are individual differences in tendency of temporal change of tactile sensation. However, there are no research examples that evaluate and analyze tactile sensations as time series data. In this study, subjective assessment of skin lotion was carried out using the Temporal Check-All-That-Apply (TCATA) method to measure tactile sensation data of time series. We also analyzed individual differences in time series data using cluster analysis. As a result, four groups were classified from 39 participants, and each of the four clusters showed a different tendency of temporal change of tactile sensation.