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  The effect of combined sensory and semantic components on audio-visual speech perception in older adults

Maguinness, C., Setti, A., Burke, K. E., Kenny, R. A., & Newell, F. N. (2011). The effect of combined sensory and semantic components on audio-visual speech perception in older adults. Frontiers in Aging Neuroscience, 3: 19. doi:10.3389/fnagi.2011.00019.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0025-6D8F-F Version Permalink: http://hdl.handle.net/21.11116/0000-0002-4CDC-2
Genre: Journal Article

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 Creators:
Maguinness, Corrina1, 2, Author              
Setti, Annalisa1, 2, Author
Burke, Kate E.1, 2, Author
Kenny, Rose Anne2, 3, Author
Newell, Fiona N.1, 2, Author
Affiliations:
1School of Psychology, Trinity College Dublin, Ireland, ou_persistent22              
2Institute of Neuroscience, Trinity College Dublin, Ireland, ou_persistent22              
3Department of Medical Gerontology, Trinity College Dublin, Ireland, ou_persistent22              

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Free keywords: Speech perception; Aging; Multisensory; Audio–visual; Cross-modal; Top-down; Semantics
 Abstract: Previous studies have found that perception in older people benefits from multisensory over unisensory information. As normal speech recognition is affected by both the auditory input and the visual lip movements of the speaker, we investigated the efficiency of audio and visual integration in an older population by manipulating the relative reliability of the auditory and visual information in speech. We also investigated the role of the semantic context of the sentence to assess whether audio-visual integration is affected by top-down semantic processing. We presented participants with audio-visual sentences in which the visual component was either blurred or not blurred. We found that there was a greater cost in recall performance for semantically meaningless speech in the audio-visual 'blur' compared to audio-visual 'no blur' condition and this effect was specific to the older group. Our findings have implications for understanding how aging affects efficient multisensory integration for the perception of speech and suggests that multisensory inputs may benefit speech perception in older adults when the semantic content of the speech is unpredictable.

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Language(s): eng - English
 Dates: 2011-12-22
 Publication Status: Published online
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.3389/fnagi.2011.00019
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Title: Frontiers in Aging Neuroscience
  Abbreviation : Front Aging Neurosci
Source Genre: Journal
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Publ. Info: Lausanne : Frontiers Research Foundation
Pages: - Volume / Issue: 3 Sequence Number: 19 Start / End Page: - Identifier: ISSN: 1663-4365
CoNE: /journals/resource/1663-4365