Activation of auditory cortex during silent lipreading.
Science
; 276(5312): 593-6, 1997 Apr 25.
Article
em En
| MEDLINE
| ID: mdl-9110978
ABSTRACT
Watching a speaker's lips during face-to-face conversation (lipreading) markedly improves speech perception, particularly in noisy conditions. With functional magnetic resonance imaging it was found that these linguistic visual cues are sufficient to activate auditory cortex in normal hearing individuals in the absence of auditory speech sounds. Two further experiments suggest that these auditory cortical areas are not engaged when an individual is viewing nonlinguistic facial movements but appear to be activated by silent meaningless speechlike movements (pseudospeech). This supports psycholinguistic evidence that seen speech influences the perception of heard speech at a prelexical stage.
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Base de dados:
MEDLINE
Assunto principal:
Córtex Auditivo
/
Leitura Labial
Limite:
Humans
Idioma:
En
Revista:
Science
Ano de publicação:
1997
Tipo de documento:
Article
País de afiliação:
Reino Unido