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Titolo:
Lip-reading ability and patterns of cortical activation studied using fMRI
Autore:
Ludman, CN; Summerfield, AQ; Hall, D; Elliott, M; Foster, J; Hykin, JL; Bowtell, R; Morris, PG;
Indirizzi:
Univ Nottingham, Dept Acad Radiol, Nottingham NG7 2RD, England Univ Nottingham Nottingham England NG7 2RD , Nottingham NG7 2RD, England Univ Nottingham, MR Ctr, Nottingham NG7 2RD, England Univ Nottingham Nottingham England NG7 2RD , Nottingham NG7 2RD, England Univ Nottingham, MRC, Inst Hearing Res, Nottingham NG7 2RD, England Univ Nottingham Nottingham England NG7 2RD , Nottingham NG7 2RD, England
Titolo Testata:
BRITISH JOURNAL OF AUDIOLOGY
fascicolo: 4, volume: 34, anno: 2000,
pagine: 225 - 230
SICI:
0300-5364(200008)34:4<225:LAAPOC>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUDITORY-CORTEX; LOCATION;
Keywords:
functional magnetic resonance imaging (fMRI); individual differences; lip-reading; speech reading;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Ludman, CN Univ Nottingham Hosp, Div Acad Radiol, Nottingham NG7 2UH, England Univ Nottingham Hosp Nottingham England NG7 2UH 2UH, England
Citazione:
C.N. Ludman et al., "Lip-reading ability and patterns of cortical activation studied using fMRI", BR J AUDIOL, 34(4), 2000, pp. 225-230

Abstract

Lip-reading is a complex cognitive skill with large individual differencesin performance. The basis of these individual differences remains poorly understood. Functional magnetic resonance imaging (fMRI) techniques allows brain activation accompanying complex cognitive activities to be studied noninvasively. In the present paper, fMRI was used to study the patterns of cortical activation that occur during the silent lip-reading of connected speech and to investigate whether there are detectable differences in activation between subjects with widely differing lip-reading abilities. From a cohort of 26 volunteers, nine subjects who fell into three distinct lip-reading ability groups were selected. Brain activation was measured in two conditions: an experimental condition where subjects attempted to lip-read sentences; and a baseline condition where subjects passively viewed a static image of a talker's face. Relative to the baseline condition, lip-reading induced activation in several cortical areas, including the auditory cortices, despite the lack of an auditory component to the task. In comparison to the better two groups of lip-readers, subjects in the poorest group displayed significantly less activation in superior and middle temporal gyrus, but notinferior temporal gyrus. These preliminary results justify more extensive investigations of the cortical basis of individual differences in lip-reading.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 02:01:52