Sound affecting vision: temporal aspects

Jean Vroomen, Tilburg University

Abstract
A sound presented in close temporal proximity to a visual stimulus can alter the perceived temporal occurrence of that visual stimulus[1] (i.e. temporal ventriloquism. The conditions under which this crossmodal interaction occurs (spatial and temporal disparity between sound and light, grouping of the sound), and its neural consequences[2] (ERPs) will be discussed. Our results challenge the commonly held view that similarity in space and time are necessary and sufficient conditions for crossmodal interactions to occur[3].

1. Vroomen, J. and B. de Gelder, Temporal ventriloquism: Sound modulates the flash-lag effect. Journal of Experimental Psychology-Human Perception and Performance, 2004. 30(3): p. 513-518.
2. Stekelenburg, J.J., J. Vroomen, and B. de Gelder, Illusory sound shifts induced by the ventriloquist illusion evoke the mismatch negativity. Neuroscience Letters, 2004. 357(3): p. 163-166.
3. Vroomen, J., Ventriloquism and the nature of the unity decision, in Cognitive contributions to the perception of spatial and temporal events, G. Aschersleben, T. Bachmann, and J. Müsseler, Editors. 1999, Elsevier: North Holland. p. 389-394.

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