Differential activation of right and left posterior sylvian regions by semantic and phonological tasks: a positron-emission tomography study in normal human subjects.

Détails

ID Serval
serval:BIB_C01875480CC0
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Differential activation of right and left posterior sylvian regions by semantic and phonological tasks: a positron-emission tomography study in normal human subjects.
Périodique
Neuroscience Letters
Auteur(s)
Démonet J.F., Price C., Wise R., Frackowiak R.S.
ISSN
0304-3940 (Print)
ISSN-L
0304-3940
Statut éditorial
Publié
Date de publication
1994
Volume
182
Numéro
1
Pages
25-28
Langue
anglais
Notes
Publication types: Journal ArticlePublication Status: ppublish
Résumé
A previous study of brain activation in normal subjects during a phonological (Phonemes) task and a lexical semantic (Words) task using positron-emission tomography [3] is complemented by new data after a method for image realignment was applied [17]. The pattern of cerebral blood flow increases associated with Words compared with Phonemes, involved several foci of activation but these were not exclusively distributed in the left hemisphere as it also included the right angular gyrus, suggesting a participation of the right hemisphere in lexical semantic processes. Conversely, by comparison to Words, Phonemes activated left-sided perisylvian regions, involving the inferior part of the left supramarginal gyrus, in accordance with previous results on verbal short-term memory [12].
Mots-clé
Adult, Cerebral Aqueduct/physiology, Cerebral Aqueduct/radionuclide imaging, Cerebrovascular Circulation, Hearing/physiology, Humans, Male, Phonetics, Speech, Speech Perception/physiology, Tomography, Emission-Computed
Pubmed
Web of science
Création de la notice
16/09/2011 21:32
Dernière modification de la notice
03/03/2018 21:05
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