Tactual roughness perception: Spatial and temporal determinants.

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Abstract
Data are provided that clarify and strengthen the Taylor and Lederman model of tactual roughness perception. Experiment 1 showed that magnitude estimates of the felt roughness of linear gratings were not affected by either spatial period or groove-to-ridge ratio. Experiment 2 found only negligible effects on perceived roughness of varying the relative speed of motion between skin and surface, whether active or passive touch was used. The results of both experiments argue strongly against a temporal coding theory of roughness perception.

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