Chapter

The development of audiovisual speech perception

Salvador Soto-Faraco, Marco Calabresi, Jordi Navarra, Janet F. Werker and David J. Lewkowicz

in Multisensory Development

Published in print June 2012 | ISBN: 9780199586059
Published online September 2012 | e-ISBN: 9780191741470 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780199586059.003.0009
The development of audiovisual speech perception

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This chapter considers the contribution of multisensory processes to the development of speech perception. Evidence for matching and integration of audiovisual speech information within the first few months of life suggests an early preparedness for extracting multisensory relations in spoken language. Nonetheless, it is currently not known what relative contribution speech-specific vs. domain-general abilities make to this early appearing ability. Brain mechanisms supporting audiovisual speech processing also seem to be functional very early on, although they are relatively rudimentary compared to such mechanisms in adults. Together, these findings suggest that the development of audiovisual speech processing is neither strictly incremental nor linear. This is illustrated by evidence of age- and experience-related modulations including perceptual narrowing, strengthening of audiovisual integration by middle childhood, the influence of linguistic context, and plastic adaptation following declines in sensory acuity.

Keywords: audiovisual integration; audiovisual speech; bimodal speech; speech-reading; multisensory; speech perception; development; language acquisition; multisensory development

Chapter.  12844 words.  Illustrated.

Subjects: Cognitive Psychology

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