Abstract:
:Broca's area in the inferior frontal gyrus consists of two cytoarchitectonically defined regions-Brodmann areas (BA) 44 and 45. Combining probabilistic maps of these two areas with functional neuroimaging data obtained using PET, it is shown that BA45, not BA44, is activated by both speech and signing during the production of language narratives in bilingual subjects fluent from early childhood in both American Sign Language (ASL) and English when the generation of complex movements and sounds is taken into account. It is BA44, not BA45, that is activated by the generation of complex articulatory movements of oral/laryngeal or limb musculature. The same patterns of activation are found for oral language production in a group of English speaking monolingual subjects. These findings implicate BA45 as the part of Broca's area that is fundamental to the modality-independent aspects of language generation.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Horwitz B,Amunts K,Bhattacharyya R,Patkin D,Jeffries K,Zilles K,Braun ARdoi
10.1016/s0028-3932(03)00125-8subject
Has Abstractpub_date
2003-01-01 00:00:00pages
1868-76issue
14eissn
0028-3932issn
1873-3514pii
S0028393203001258journal_volume
41pub_type
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