MULTISENSORY INTEGRATION BETWEEN VISUAL AND TACTILE MOTION INFORMATION: EVIDENCE FROM REDUNDANT-SIGNALS EFFECTS ON REACTION TIME

  • Hiroshi Ushioda
  • Yuichi Wada

Abstract

This study investigated the conditions under which visual and tactile motion information were integrated efficiently, employing redundancy gain paradigm (Miller, 1982). In the present experiments, visual motion stimuli and/or tactile motion stimuli were presented. Participants were asked to respond to stimuli of two sensory modalities as quickly as possible. It is well known that faster reaction times are observed for bimodal stimuli than for unimodal stimuli, and the facilitation is called redundancy gain. The present study manipulated figural configurations of visual motion stimuli, and examined whether the congruency of figural configurations between vision and touch would modulate the amount of redundancy gain and the reaction time distribution. The findings have important implications for the locus of multi-sensory integration between visual and tactile motion information.

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