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Article Dans Une Revue Cerebral Cortex Année : 2011

Lateralization of Speech Production Starts in Sensory Cortices—A Possible Sensory Origin of Cerebral Left Dominance for Speech

Résumé

Speech production is a left-lateralized brain function, which could arise from a left dominance either in speech executive or sensory processes or both. Using functional magnetic resonance imaging in healthy subjects, we show that sensory cortices already lateralize when speaking is intended, while the frontal cortex only lateralizes when speech is acted out. The sequence of lateralization, first temporal then frontal lateralization, suggests that the functional lateralization of the auditory cortex could drive hemispheric specialization for speech production.

Dates et versions

hal-02088032 , version 1 (02-04-2019)

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Christian A. Kell, Benjamin Morillon, Frederique Kouneiher, Anne-Lise Giraud. Lateralization of Speech Production Starts in Sensory Cortices—A Possible Sensory Origin of Cerebral Left Dominance for Speech. Cerebral Cortex, 2011, 21 (4), pp.932-937. ⟨10.1093/cercor/bhq167⟩. ⟨hal-02088032⟩
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