Document Detail

Atypical audiovisual speech integration in infants at risk for autism.
MedLine Citation:
PMID:  22615768     Owner:  NLM     Status:  MEDLINE    
The language difficulties often seen in individuals with autism might stem from an inability to integrate audiovisual information, a skill important for language development. We investigated whether 9-month-old siblings of older children with autism, who are at an increased risk of developing autism, are able to integrate audiovisual speech cues. We used an eye-tracker to record where infants looked when shown a screen displaying two faces of the same model, where one face is articulating/ba/and the other/ga/, with one face congruent with the syllable sound being presented simultaneously, the other face incongruent. This method was successful in showing that infants at low risk can integrate audiovisual speech: they looked for the same amount of time at the mouths in both the fusible visual/ga/- audio/ba/and the congruent visual/ba/- audio/ba/displays, indicating that the auditory and visual streams fuse into a McGurk-type of syllabic percept in the incongruent condition. It also showed that low-risk infants could perceive a mismatch between auditory and visual cues: they looked longer at the mouth in the mismatched, non-fusible visual/ba/- audio/ga/display compared with the congruent visual/ga/- audio/ga/display, demonstrating that they perceive an uncommon, and therefore interesting, speech-like percept when looking at the incongruent mouth (repeated ANOVA: displays x fusion/mismatch conditions interaction: F(1,16) = 17.153, p = 0.001). The looking behaviour of high-risk infants did not differ according to the type of display, suggesting difficulties in matching auditory and visual information (repeated ANOVA, displays x conditions interaction: F(1,25) = 0.09, p = 0.767), in contrast to low-risk infants (repeated ANOVA: displays x conditions x low/high-risk groups interaction: F(1,41) = 4.466, p = 0.041). In some cases this reduced ability might lead to the poor communication skills characteristic of autism.
Jeanne A Guiraud; Przemyslaw Tomalski; Elena Kushnerenko; Helena Ribeiro; Kim Davies; Tony Charman; Mayada Elsabbagh; Mark H Johnson;
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-05-15
Journal Detail:
Title:  PloS one     Volume:  7     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2012  
Date Detail:
Created Date:  2012-05-22     Completed Date:  2012-09-14     Revised Date:  2013-06-24    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e36428     Citation Subset:  IM    
Centre for Brain and Cognitive Development, Department of Psychological Science, Birkbeck, University of London, London, United Kingdom.
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MeSH Terms
Autistic Disorder / epidemiology*,  physiopathology
Risk Factors
Vision, Ocular*
Grant Support
G0701484//Medical Research Council
Simon Baron-Cohen / ; Patrick Bolton / ; Susie Chandler / ; Janice Fernandes / ; Teodora Gliga / ; Greg Pasco / ; Leslie Tucker /

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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