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Titolo:
Functional neuroimaging of speech perception in six normal and two aphasicsubjects
Autore:
Mummery, CJ; Ashburner, J; Scott, SK; Wise, RJS;
Indirizzi:
Inst Neurol, Wellcome Dept Cognit Neurol, London WC1N 3BG, England Inst Neurol London England WC1N 3BG nit Neurol, London WC1N 3BG, England MRC, Cognit & Brain Sci Unit, Cambridge CB2 2EF, England MRC Cambridge England CB2 2EF Brain Sci Unit, Cambridge CB2 2EF, England Hammersmith Hosp, Imperial Coll, Sch Med, London W12 0NN, England Hammersmith Hosp London England W12 0NN Sch Med, London W12 0NN, England
Titolo Testata:
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
fascicolo: 1, volume: 106, anno: 1999,
pagine: 449 - 457
SICI:
0001-4966(199907)106:1<449:FNOSPI>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; HUMAN AUDITORY-CORTEX; WORD COMPREHENSION; BRAIN; PET; INFORMATION; DEAFNESS; LANGUAGE; RECOVERY; SCAN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Engineering, Computing & Technology
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Scott, SK Inst Cognit Neurosci, Alexandra House,17 Queen Sq, London WC1N 3AR, England Inst Cognit Neurosci Alexandra House,17 Queen Sq London England WC1N 3AR
Citazione:
C.J. Mummery et al., "Functional neuroimaging of speech perception in six normal and two aphasicsubjects", J ACOUST SO, 106(1), 1999, pp. 449-457

Abstract

This positron emission tomography study used a correlational design to investigate neural activity during speech perception in six normal subjects and two aphasic patients. The normal subjects listened either to speech or tosignal-correlated noise equivalents; the latter were nonspeech stimuli, similar to speech in complexity but not perceived as speechlike. Regions common to the auditory processing of both types of stimuli were dissociated from those specific to spoken words. Increasing rates of presentation of both speech and nonspeech correlated with cerebral activity in bilateral transverse gyri and adjacent superior temporal cortex. Correlations specific to speech stimuli were located more anteriorly in both superior temporal sulci. The only asymmetry in normal subjects was a left lateralized response to speech in the posterior superior temporal sulcus, corresponding closely to structural asymmetry on the subjects' magnetic resonance images. Two patients, who had left temporal infarction but performed well on single word comprehension tasks, were also scanned while listening to speech. These cases showed right superior temporal activity correlating with increasing rates of hearing speech, but no significant left temporal activation. These findings together suggest that the dorsolateral temporal cortex of both hemispheres can be involved in prelexical processing of speech. (C) 1999 Acoustical Society of America. [S0001-4966(99)00107-1].

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 18:34:05