Steven Hillyard
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Spatial Specificity in Crossmodal Interactions
Multiple Paper Presentation

Steven Hillyard
Department of Neurosciences, UCSD

Wolfgang Teder-Salejarvi
Department of Neurosciences, UCSD

Francesco Di Russo
Fondazione Santa Lucia, Rome

John McDonald
Department of Psychology, Simon Fraser University

     Abstract ID Number: 18

Abstract
The neural basis of multisensory convergence has been studied in humans using neuroimaging techniques as well as recordings of event-related potentials (ERPs) and magnetic fields. Previous ERP studies have found interactions between auditory (A) and visual (V) inputs at specific latencies in both multimodal and unimodal brain regions. The present study investigated whether A/V interactions differ as a function of the spatial congruity of the A and V stimuli. Randomized sequences of A, V, and A + V stimuli were presented to left and/or right locations while subjects attempted to detect slightly more intense targets in either modality at either location. Cross-modal A/V interactions were found to differ when the bimodal A + V stimuli were presented at the same versus opposite locations. It was concluded that spatial congruity is an important determinant of crossmodal interaction in the human brain.

To be Presented at the Following Symposium:
Electrophysiological studies of multisensory integration and crossmodal attention in humans
Other papers in this Symposium:


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