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The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
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Roughness perception: A multisensory/crossmodal perspective.

Nicola Di Stefano1, Charles Spence2

  • 1National Research Council, Institute for Cognitive Sciences and Technologies, Rome, Italy. nicola.distefano@istc.cnr.it.

Attention, Perception & Psychophysics
|August 26, 2022
PubMed
Summary

This review explores the perception of roughness across senses, questioning if its meaning is consistent within and across auditory, tactile, visual, and chemical domains. It examines how crossmodal correspondences relate to distinct perceptual features or amodal properties.

Keywords:
AstringencyAuditory consonance/dissonanceHuman vocalizationsIntersensoryOlfactionTasteTouchVision

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Area of Science:

  • Perceptual Psychology
  • Crossmodal Research
  • Sensory Science

Background:

  • Roughness is a key perceptual attribute in auditory, tactile, and visual domains.
  • Its application in chemical senses (olfaction, gustation) is less explored.
  • Understanding roughness perception is vital for sensory science.

Purpose of the Study:

  • To critically evaluate the meaning of 'roughness' in unisensory and multisensory contexts.
  • To determine if roughness perception is consistent across different sensory modalities.
  • To investigate whether crossmodal roughness correspondences reflect distinct perceptual features or amodal properties.

Main Methods:

  • Review of existing literature on roughness perception in auditory, tactile, visual, olfactory, and gustatory domains.
  • Analysis of studies examining crossmodal correspondences (audiovisual, audiotactile, auditory-gustatory/olfactory).
  • Identification of limitations and future research directions in roughness perception.

Main Results:

  • The term 'roughness' is applied differently across individual sensory modalities.
  • Crossmodal correspondences for roughness may involve amodal properties rather than solely distinct perceptual features.
  • Significant gaps exist in the current understanding of roughness perception, particularly in chemical senses.

Conclusions:

  • The concept of roughness varies significantly across sensory modalities.
  • Crossmodal research on roughness requires further investigation to clarify its perceptual basis.
  • Future empirical research should focus on elucidating the amodal or specific feature-based nature of crossmodal roughness perception.