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Title

Lateralization of speech production starts in sensory cortices: a possible sensory origin of cerebral left dominance for speech

Authors
Kell, Christian Alexander
Morillon, Benjamin
Kouneiher, Frederique
Published in Cerebral Cortex. 2011, vol. 21, no. 4, p. 932-7
Abstract 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.
Keywords AdultBrain MappingFemaleFunctional Laterality/physiologyHumansImage Interpretation, Computer-AssistedMagnetic Resonance ImagingMaleSomatosensory Cortex/physiologySpeech/physiologyYoung Adult
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PMID: 20833698
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KELL, Christian Alexander et al. Lateralization of speech production starts in sensory cortices: a possible sensory origin of cerebral left dominance for speech. In: Cerebral Cortex, 2011, vol. 21, n° 4, p. 932-7. https://archive-ouverte.unige.ch/unige:25449

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Deposited on : 2013-01-14

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