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Brain Lang. 2004 Apr;89(1):253-60.

Neural correlates of bimodal speech and gesture comprehension.

Author information

1
Psychology Department, Colgate University, Hamilton, NY 13346-1338, USA. skelly@mail.colgate.edu

Abstract

The present study examined the neural correlates of speech and hand gesture comprehension in a naturalistic context. Fifteen participants watched audiovisual segments of speech and gesture while event-related potentials (ERPs) were recorded to the speech. Gesture influenced the ERPs to the speech. Specifically, there was a right-lateralized N400 effect-reflecting semantic integration-when gestures mismatched versus matched the speech. In addition, early sensory components in bilateral occipital and frontal sites differentiated speech accompanied by matching versus non-matching gestures. These results suggest that hand gestures may be integrated with speech at early and late stages of language processing.

PMID:
15010257
DOI:
10.1016/S0093-934X(03)00335-3
[Indexed for MEDLINE]
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