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Front Psychol. 2012 Jan 02;2:391. doi: 10.3389/fpsyg.2011.00391. eCollection 2012.

Auditory motion capturing ambiguous visual motion.

Frontiers in psychology

Arjen Alink, Felix Euler, Elena Galeano, Alexandra Krugliak, Wolf Singer, Axel Kohler

Affiliations

  1. Department of Neurophysiology, Max Planck Institute for Brain Research Frankfurt am Main, Germany.

PMID: 22232613 PMCID: PMC3249388 DOI: 10.3389/fpsyg.2011.00391

Abstract

In this study, it is demonstrated that moving sounds have an effect on the direction in which one sees visual stimuli move. During the main experiment sounds were presented consecutively at four speaker locations inducing left or rightward auditory apparent motion. On the path of auditory apparent motion, visual apparent motion stimuli were presented with a high degree of directional ambiguity. The main outcome of this experiment is that our participants perceived visual apparent motion stimuli that were ambiguous (equally likely to be perceived as moving left or rightward) more often as moving in the same direction than in the opposite direction of auditory apparent motion. During the control experiment we replicated this finding and found no effect of sound motion direction on eye movements. This indicates that auditory motion can capture our visual motion percept when visual motion direction is insufficiently determinate without affecting eye movements.

Keywords: Bayesian; audiovisual; bistable; eye movement; motion capture; multisensory integration

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