Modulation of human visual cortex by crossmodal spatial attention

E. Macaluso, C. D. Frith, J. Driver

Research output: Contribution to journalArticle

Abstract

A sudden touch on one hand can improve vision near that hand, revealing crossmodal links in spatial attention. It is often assumed that such links involve only multimodal neural structures, but unimodal brain areas may also be affected. We tested the effect of simultaneous visuo-tactile stimulation on the activity of the human visual cortex. Tactile stimulation enhanced activity in the visual cortex, but only when it was on the same side as a visual target. Analysis of effective connectivity between brain areas suggests that touch influences unimodal visual cortex via back-projections from multimodal parietal areas. This provides a neural explanation for crossmodal links in spatial attention.

Original languageEnglish
Pages (from-to)1206-1208
Number of pages3
JournalScience
Volume289
Issue number5482
DOIs
Publication statusPublished - Aug 18 2000

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