Neurophysiological distinction of verb categories.
Neuroreport
; 11(12): 2789-93, 2000 Aug 21.
Article
em En
| MEDLINE
| ID: mdl-10976964
ABSTRACT
Neurophysiological brain responses to subcategories of action verbs were recorded using high resolution EEG. Starting 240 ms after word onset, topographies of event-related potentials distinguished between verbs referring to different action types. Current source density estimates revealed that verbs referring to actions executed with the legs (to kick) produced an activity focus close to the vertex, above motor areas involved in the programming of leg movements, whereas face-related verbs (to speak) produced a focus at left-lateral recordings, above perisylvian areas and the cortical representation of the face and articulators. This is evidence that brain mechanisms involved in word processing can differ even between fine-grained lexico-semantic subcategories and already within the first quarter of a second after word onset. We offer an explanation of the data in neurobiological terms.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Semântica
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Encéfalo
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Discriminação Psicológica
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Idioma
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article