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Related Experiment Video

Updated: Jun 20, 2026

Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
09:49

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Published on: April 16, 2014

Cross-Modal Interactions and Movement-Related Tactile Gating: The Role of Vision.

Maria Casado-Palacios1,2, Alessia Tonelli2, Claudio Campus2

  • 1DIBRIS-Department of Informatics, Bioengineering, Robotics and Systems Engineering, University of Genoa, 16145 Genoa, Italy.

Brain Sciences
|March 28, 2025
PubMed
Summary

Active movement impairs audio-tactile integration in sighted individuals, but not the blind. Blind participants experienced reduced tactile precision solely due to movement, highlighting differences in sensory processing.

Keywords:
active touchaudioblindnesscross-modal processing

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Applying Incongruent Visual-Tactile Stimuli during Object Transfer with Vibro-Tactile Feedback

Published on: May 23, 2019

Area of Science:

  • Neuroscience
  • Sensory Integration
  • Human-Computer Interaction

Background:

  • Multisensory cue integration creates a coherent environmental representation.
  • Lack of visual feedback in blind individuals may affect multisensory integration.
  • Voluntary movement can suppress somatosensory cortical processing, potentially worsening tactile encoding.

Purpose of the Study:

  • To explore how active movements affect cross-modal interaction.
  • To investigate the role of vision in multisensory interaction during movement.

Main Methods:

  • Compared precision in a velocity discrimination task for 18 blind and 18 sighted individuals.
  • Assessed tactile and audio-tactile stimulation under passive and active touch conditions.
  • Calculated the just noticeable difference (JND) to measure precision.

Main Results:

  • Sighted individuals showed worse precision in audio-tactile conditions during active movement (p=0.046).
  • Blind participants did not exhibit worse precision in audio-tactile conditions during active movement (p=0.513).
  • For blind participants, movement alone negatively impacted precision.

Conclusions:

  • Active movement-induced noise hinders audio-tactile integration in sighted individuals.
  • Blind individuals show reduced sensory interaction, primarily affected by movement.
  • Findings are relevant for developing advanced haptic devices.