Application of Cusp Surface Analysis Using Web Application to Quantification of Effect of Localized Vibration on Tactile Sense at Finger Tip

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  • 指先の触覚に対する局所振動の影響の定量化におけるWebアプリケーションを用いたカスプ面解析の応用

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This paper describes about the cusp surface analysis system and the effect of the localized vibration on the tactile sense at a finger tip. The personality of subjects, the localized vibration and the discrimination ability of subjects are employed as the factors in the cusp surface analysis. The discrimination ability of subjects is calculated by the magnitude estimation method. In the result of the cusp surface analysis, it is clarified that the catastrophe phenomenon (jumping phenomenon) is generated in the relationship among the emotional instability, the acceleration amplitude of the localized vibration and the discrimination ability. In the range of bifurcation set, increasing the acceleration amplitude of the localized vibration, probability of decrease of the discrimination ability increases and increasing the emotional instability, probability of decrease of the discrimination ability increases.

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