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Common neural basis for phoneme processing in infants and adults.

G Dehaene-Lambertz¹, T Gliga

¹Unité INSERM 562, Service Hospitalier Frédéric Joliot, CEA/DRM/DSV, 4 place du général Leclerc, 91401 Orsay cedex, France. ghis@lscp.ehess.fr

Journal of Cognitive Neuroscience

|October 29, 2004

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Infants and adults show similar speech perception abilities and brain responses, suggesting continuity in language processing from birth. Early phonemic representations are shaped by speech input statistics, leading to native language categories.

Area of Science:

Neuroscience
Developmental Psychology
Linguistics

Background:

Understanding infant language acquisition is crucial.
Phoneme perception is key to language processing.
Similarities in infant and adult behavioral capacities are known.

Purpose of the Study:

To investigate neural similarities in speech processing between infants and adults.
To compare event-related potential (ERP) data from infant and adult phoneme discrimination tasks.
To explore the continuity of neural substrates underlying phoneme perception.

Main Methods:

Review of event-related potential (ERP) studies in infants.
Comparison of infant ERP data with existing adult literature.
Analysis of phoneme discrimination tasks in both age groups.

Related Experiment Videos

Main Results:

Striking behavioral similarities between infants and adults in phoneme perception.
Similar event-related potential (ERP) patterns observed in infants and adults.
Evidence suggests continuity in neural processing from early infancy to adulthood.

Conclusions:

Infants possess innate phonemic representations.
These representations are modified by statistical properties of speech input.
This process guides infants toward native phonemic categories without explicit instruction.