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Titolo:
A common language network for comprehension and production: A contributionto the definition of language epicenters with PET
Autore:
Papathanassiou, D; Etard, O; Mellet, E; Zago, L; Mazoyer, B; Tzourio-Mazoyer, N;
Indirizzi:
Univ Caen & CEA LRC 13V, UPRES EA 2127, GIN, GIP Cyceron, F-14074 Caen, France Univ Caen & CEA LRC 13V Caen France F-14074 yceron, F-14074 Caen, France
Titolo Testata:
NEUROIMAGE
fascicolo: 4, volume: 11, anno: 2000,
pagine: 347 - 357
SICI:
1053-8119(200004)11:4<347:ACLNFC>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
RIGHT CEREBELLAR LESION; FUNCTIONAL-ANATOMY; ELECTRICAL-STIMULATION; TEMPORAL-LOBE; PLANUM TEMPORALE; VERB GENERATION; HUMAN BRAIN; ACTIVATION; SPEECH; REGION;
Keywords:
PET; language comprehension; language production; Broca; Wernicke; basal language area; inferior temporal cortex; cerebellum;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
69
Recensione:
Indirizzi per estratti:
Indirizzo: Papathanassiou, D Univ Caen & CEA LRC 13V, UPRES EA 2127, GIN, GIP Cyceron, Blvd Henri Becquerel,BP 5229, F-14074 Caen, France Univ Caen & CEA LRC 13V Blvd Henri Becquerel,BP 5229 Caen France F-14074
Citazione:
D. Papathanassiou et al., "A common language network for comprehension and production: A contributionto the definition of language epicenters with PET", NEUROIMAGE, 11(4), 2000, pp. 347-357

Abstract

In this paper, we report on a PET activation study designed to assess whether functional neuroimaging would help to uncover essential language areas in normal volunteers and to provide a more accurate definition of their localization. Regional cerebral blood flow was repeatedly monitored in eight right-handed male volunteers, while performing a language comprehension task(listening to factual stories) and a language production task (covert generation of verbs semantically related to heard nouns), using silent resting as a control condition. The conjunction analysis, conducted with SPM, was used to uncover the network of activations common to both task that includedthree left hemisphere areas, namely (1) the pars opercularis and triangularis of the inferior frontal gyrus, (2) the posterior part of the superior temporal cortex centered around the superior temporal sulcus, extending to the planum temporale posterior part but sparing the supramarginalis and angular gyri, and (3) the most anterior part of the left inferior temporal gyrus at the junction with the anterior fusiform gyrus. The inferior and lateral parts of the right cerebellar cortex were also included in the conjunction network. Each of the three cortical areas, when they are site of lesion or electrical stimulation, elicit impairment in both language comprehension and production and can thus be considered as essential to language. Accordingly, the present results provide conservative anato-mofunctional definitions of the Broca, Wernicke, and basal language areas. Interestingly, contralateral homologues of Broca's and Wernicke's areas also lighted up in the conjunction analysis that could be related to the interindividual variabilityof hemispheric language dominance. (C) 2000 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/01/20 alle ore 18:53:18