Earlier Speech Exposure Does Not Accelerate Speech Acquisition

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dc.contributor.authorPena, Marcela
dc.contributor.authorWerker, Janet F.
dc.contributor.authorDehaene-Lambertz, Ghislaine
dc.date.accessioned2025-01-20T23:57:05Z
dc.date.available2025-01-20T23:57:05Z
dc.date.issued2012
dc.description.abstractCritical periods in language acquisition have been discussed primarily with reference to studies of people who are deaf or bilingual. Here, we provide evidence on the opening of sensitivity to the linguistic environment by studying the response to a change of phoneme at a native and nonnative phonetic boundary in full-term and preterm human infants using event-related potentials. Full-term infants show a decline in their discrimination of nonnative phonetic contrasts between 9 and 12 months of age. Because the womb is a high-frequency filter, many phonemes are strongly degraded in utero. Preterm infants thus benefit from earlier and richer exposure to broadcast speech. We find that preterms do not take advantage of this enriched linguistic environment: the decrease in amplitude of the mismatch response to a nonnative change of phoneme at the end of the first year of life was dependent on maturational age and not on the duration of exposure to broadcast speech. The shaping of phonological representations by the environment is thus strongly constrained by brain maturation factors.
dc.description.funderFondecyt
dc.fuente.origenWOS
dc.identifier.doi10.1523/JNEUROSCI.6516-11.2012
dc.identifier.issn0270-6474
dc.identifier.urihttps://doi.org/10.1523/JNEUROSCI.6516-11.2012
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95190
dc.identifier.wosidWOS:000307940000001
dc.issue.numero33
dc.language.isoen
dc.pagina.final11163
dc.pagina.inicio11159
dc.revistaJournal of neuroscience
dc.rightsacceso restringido
dc.titleEarlier Speech Exposure Does Not Accelerate Speech Acquisition
dc.typeartículo
dc.volumen32
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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