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Related Experiment Videos

Audiotactile interactions in roughness perception.

Steve Guest1, Caroline Catmur, Donna Lloyd

  • 1Department of Experimental Psychology, University of Oxford, South Parks Road, Oxford OX1 3UD, UK. Steve.Guest@psy.ox.ac.uk

Experimental Brain Research
|August 27, 2002
PubMed
Summary
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Altering sound frequencies significantly impacts tactile perception. Lowering high frequencies makes surfaces feel smoother, demonstrating sound

Area of Science:

  • Crossmodal perception
  • Auditory-tactile interactions
  • Sensory neuroscience

Background:

  • Touch-related sounds convey surface structure information.
  • Previous research shows auditory feedback can alter hand texture perception.
  • The influence of auditory frequency on tactile roughness perception remains less explored.

Purpose of the Study:

  • To investigate if auditory frequency manipulation affects the perception of abrasive surface roughness.
  • To examine the impact of auditory feedback on perceived hand roughness and wetness.
  • To determine the role of auditory feedback timing in the parchment-skin illusion.

Main Methods:

  • Experiment 1: Participants performed speeded discrimination tasks on abrasive surfaces with manipulated auditory feedback frequency.

Related Experiment Videos

  • Experiment 2: Replicated hand-rubbing paradigm, assessing perceived roughness and wetness with altered auditory feedback.
  • Experiment 3: Investigated the effect of delayed auditory feedback on hand-rubbing perception.

    • Main Results:

    • Reducing high frequencies in auditory feedback biased tactile roughness perception towards smoothness.
    • Auditory manipulations replicated previous findings for hand wetness and extended them to hand roughness.
    • Delayed auditory feedback diminished the parchment-skin illusion.

    Conclusions:

    • Auditory frequency content dramatically influences perceived tactile roughness and moistness.
    • Different auditory perceptual dimensions exhibit varying salience for distinct tactile surfaces.
    • Findings support the significant role of crossmodal interactions in sensory perception.