| Impact of second-language experience in infancy: brain measures of first- and second-language speech perception. | |
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MedLine Citation:
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PMID: 21499512 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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Barbara T Conboy; Patricia K Kuhl |
Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Developmental science Volume: 14 ISSN: 1467-7687 ISO Abbreviation: Dev Sci Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-10-12 Completed Date: 2012-06-11 Revised Date: 2012-10-19 |
Medline Journal Info:
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Nlm Unique ID: 9814574 Medline TA: Dev Sci Country: England |
Other Details:
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Languages: eng Pagination: 242-8 Citation Subset: IM |
Affiliation:
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Institute for Learning & Brain Sciences, University of Washington, Seattle, WA 98195-7988, USA. btconboy@gmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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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:
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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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