Document Detail


Impact of second-language experience in infancy: brain measures of first- and second-language speech perception.
MedLine Citation:
PMID:  21499512     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Language experience 'narrows' speech perception by the end of infants' first year, reducing discrimination of non-native phoneme contrasts while improving native-contrast discrimination. Previous research showed that declines in non-native discrimination were reversed by second-language experience provided at 9-10 months, but it is not known whether second-language experience affects first-language speech sound processing. Using event-related potentials (ERPs), we examined learning-related changes in brain activity to Spanish and English phoneme contrasts in monolingual English-learning infants pre- and post-exposure to Spanish from 9.5-10.5 months of age. Infants showed a significant discriminatory ERP response to the Spanish contrast at 11 months (post-exposure), but not at 9 months (pre-exposure). The English contrast elicited an earlier discriminatory response at 11 months than at 9 months, suggesting improvement in native-language processing. The results show that infants rapidly encode new phonetic information, and that improvement in native speech processing can occur during second-language learning in infancy.
Authors:
Barbara T Conboy; Patricia K Kuhl
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Developmental science     Volume:  14     ISSN:  1467-7687     ISO Abbreviation:  Dev Sci     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-10-12     Completed Date:  2012-06-11     Revised Date:  2013-06-30    
Medline Journal Info:
Nlm Unique ID:  9814574     Medline TA:  Dev Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  242-8     Citation Subset:  IM    
Affiliation:
Institute for Learning & Brain Sciences, University of Washington, Seattle, WA 98195-7988, USA. btconboy@gmail.com
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MeSH Terms
Descriptor/Qualifier:
Acoustic Stimulation
Brain / physiology
Discrimination Learning / physiology
Evoked Potentials / physiology*
Female
Humans
Infant
Language Development*
Learning
Male
Multilingualism*
Phonetics
Speech Perception / physiology*
Grant Support
ID/Acronym/Agency:
F32 HD050033/HD/NICHD NIH HHS; HD37954/HD/NICHD NIH HHS; L40 HD054065-02/HD/NICHD NIH HHS; P30 DC004661/DC/NIDCD NIH HHS; P30 DC004661-12/DC/NIDCD NIH HHS; R01 HD037954-10/HD/NICHD NIH HHS
Comments/Corrections

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