When audition alters vision: an event-related potential study of the cross-modal interactions between faces and voices.
Neurosci Lett
; 369(2): 132-7, 2004 Oct 14.
Article
en En
| MEDLINE
| ID: mdl-15450682
ABSTRACT
Ten healthy volunteers took part in this event-related potential (ERP) study aimed at examining the electrophysiological correlates of the cross-modal audio-visual interactions in an identification task. Participants were confronted either to the simultaneous presentation of previously learned faces and voices (audio-visual condition; AV), either to the separate presentation of faces (visual, V) or voices (auditive, A). As expected, an interference effect of audition on vision was observed at a behavioral level, as the bimodal condition was performed more slowly than the visual condition. At the electrophysiological level, the subtraction (AV - (A + V)) gave prominence to three distinct cerebral activities (1) a central positive/posterior negative wave around 110 ms, (2) a central negative/posterior positive wave around 170 ms, AND (3) a central positive wave around 270 ms. These data suggest that cross-modal cerebral interactions could be independent of behavioral facilitation or interference effects. Moreover, the implication of unimodal and multisensory convergence regions in these results, as suggested by a source localization analysis, is discussed.
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Banco de datos:
MEDLINE
Asunto principal:
Percepción Auditiva
/
Percepción Visual
/
Potenciales Evocados
/
Cara
Tipo de estudio:
Prognostic_studies
Límite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Neurosci Lett
Año:
2004
Tipo del documento:
Article
País de afiliación:
Bélgica