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Titolo:
Separate neural subsystems within 'Wernicke's area'
Autore:
Wise, RJS; Scott, SK; Blank, SC; Mummery, CJ; Murphy, K; Warburton, EA;
Indirizzi:
Hammersmith Hosp, Cyclotron Unit, MRC, Ctr Clin Sci, London W12 0NN, England Hammersmith Hosp London England W12 0NN lin Sci, London W12 0NN, England UCL, Inst Cognit Neurosci, London, England UCL London EnglandUCL, Inst Cognit Neurosci, London, England Natl Hosp Neurol & Neurosurg, London WC1N 3BG, England Natl Hosp Neurol & Neurosurg London England WC1N 3BG n WC1N 3BG, England Charing Cross Hosp, Dept Resp Med, London, England Charing Cross Hosp London England Hosp, Dept Resp Med, London, England Addenbrookes Hosp, Dept Med Elderly, Cambridge, England Addenbrookes HospCambridge England ept Med Elderly, Cambridge, England
Titolo Testata:
BRAIN
, volume: 124, anno: 2001,
parte:, 1
pagine: 83 - 95
SICI:
0006-8950(200101)124:<83:SNSW'A>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLANUM TEMPORALE; AUDITORY-CORTEX; CONDUCTION APHASIA; COMPLEX SOUNDS; SPEECH; LATERALIZATION; PERCEPTION; ANARTHRIA; REGION; MODEL;
Keywords:
PET; Wernicke's area; speech perception; speech production;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Wise, RJS Hammersmith Hosp, Cyclotron Unit, MRC, Ctr Clin Sci, Du Cane Rd,London W12 0NN, England Hammersmith Hosp Du Cane Rd London England W12 0NN 0NN, England
Citazione:
R.J.S. Wise et al., "Separate neural subsystems within 'Wernicke's area'", BRAIN, 124, 2001, pp. 83-95

Abstract

Over time, both the functional and anatomical boundaries of 'Wernicke's area' have become so broad as to be meaningless. We have re-analysed four functional neuroimaging (PET) studies; three previously published and one unpublished, to identify anatomically separable, functional subsystems in the left superior temporal cortex posterior to primary auditory cortex. From theresults we identified a posterior stream of auditory processing, One part,directed along the supratemporal cortical plane, responded to both non-speech and speech sounds, including the sound of the speaker's own voice. Activity in its most posterior and medial part, at the junction with the inferior parietal lobe, was linked to speech production rather than perception. The second, more lateral and ventral part lay in the posterior left superiortemporal sulcus, a region that responded to an external source of speech. In addition, this region was activated by the recall of lists of words during verbal fluency tasks. The results are compatible with an hypothesis thatthe posterior superior temporal cortex is specialized for processes involved in the mimicry of sounds, including repetition, the specific role of theposterior left superior temporal sulcus being to transiently represent phonetic sequences, whether heard or internally generated and rehearsed. Theseprocesses are central to the acquisition of longterm lexical memories of novel words.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 09:21:14