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A dynamic cortical network supporting word selection in language production| old_uid | 16001 |
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| title | A dynamic cortical network supporting word selection in language production |
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| start_date | 2015/09/11 |
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| schedule | 11h-12h |
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| online | no |
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| summary | Adults fluidly utter 2 to 3 words per second selected from up to 100,000 words in the mental lexicon and only err once every 1000 words. Although seemingly easy, producing language is complex and depends on cognitive control processes. In particular, choosing words cannot be carried out adequately without cognitive control processes. Despite the central importance of our capacity to produce language and the immense personal and societal cost caused by its disruption, the spatio-temporal pattern of activation of the brain regions involved in single word selection and their precise role are largely unknown. In this talk, I will present results from surface and intracranial electrophysiological studies and neuropsychological studies shedding light on these issues. These results support the hypotheses that posterior inferior left temporal cortex engages in word retrieval as semantic concepts become available while medial and left prefrontal activity provide top-down control over left temporal regions to help solve competition for word retrieval. |
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| responsibles | Pélissier |
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