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Revisiting the roleof Broca's area insentence processing:Syntactic integrationversus syntacticworking memory Christian J. FiebachMatthias SchlesewskyGabriele Lohmann2004 год

Revisiting the role of Broca's area in sentence processing: Syntactic integration versus syntactic working memory
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Аннотация: Abstract Most previous neuroimaging studies of sentence processing have associated Broca's area with syntactic processing; however, the exact nature of the processes subserved by this brain region is yet not well understood. Although some authors suggest that Brodmann area (BA) 44 of the left inferior frontal gyrus (i.e., Broca's area) is relevant for syntactic integration processes, others claim that it is associated with working memory mechanisms relevant for language processing. To dissociate these two possible functions, the present study investigated hemodynamic responses elicited while participants processed German indirect wh‐questions. Activation increases were observed in left BA 44 together with superior temporal areas and right hemispheric homologues for sentences with noncanonical word order, in which a verb argument was dislocated from its canonical position over a relatively long distance. In these sentences, syntactic working memory load was assumed to be greatest. In contrast, no activation increase was elicited by object–initial as opposed to subject–initial sentences that did not differ with respect to working memory costs but with respect to syntactic integration costs. These data strongly suggest that Broca's area plays a critical role in syntactic working memory during online sentence comprehension. Hum. Brain Mapping 24:79–91, 2005. © 2004 Wiley‐Liss, Inc.
Год издания: 2004
Авторы: Christian J. Fiebach, Matthias Schlesewsky, Gabriele Lohmann, D. Yves von Cramon, Angela D. Friederici
Издательство: Wiley
Источник: Human Brain Mapping
Ключевые слова: Neurobiology of Language and Bilingualism, Reading and Literacy Development, Neural and Behavioral Psychology Studies
Другие ссылки: Human Brain Mapping (HTML)
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