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Event-related potentials to structural familiar face incongruity processing

Published online by Cambridge University Press:  14 November 2002

BOUTHEINA JEMEL
Affiliation:
Unité de Neurosciences Cognitives et Imagerie Cérébrale, CNRS, Lena, France Université de Paris 6- Hôpital de la Salpêtrière, Paris, France
NATHALIE GEORGE
Affiliation:
Unité de Neurosciences Cognitives et Imagerie Cérébrale, CNRS, Lena, France Université de Paris 6- Hôpital de la Salpêtrière, Paris, France
ELA OLIVARES
Affiliation:
Department of Cognitive Neuroscience, Center for Neuroscience, Havana, Cuba
NICOLE FIORI
Affiliation:
Unité de Neurosciences Cognitives et Imagerie Cérébrale, CNRS, Lena, France Université de Paris 6- Hôpital de la Salpêtrière, Paris, France
BERNARD RENAULT
Affiliation:
Unité de Neurosciences Cognitives et Imagerie Cérébrale, CNRS, Lena, France Université de Paris 6- Hôpital de la Salpêtrière, Paris, France
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Abstract

Thirty scalp sites were used to investigate the specific topography of the event-related potentials (ERPs) related to face associative priming when masked eyes of familiar faces were completed with either the proper features or incongruent ones. The enhanced negativity of N210 and N350, due to structural incongruity of faces, have a “category specific” inferotemporal localization on the scalp. Additional analyses support the existence of multiple ERP features within the temporal interval typically associated with N400 (N350 and N380), involving occipitotemporal and centroparietal areas. Seven reliable dipole locations have been evidenced using the brain electrical source analysis algorithm. Some of these localizations (fusiform, parahippocampal) are already known to be involved in face recognition, the other ones being related to general cognitive processes related to the task's demand. Because of their specific topography, the observed effects suggest that the face structural congruency process might involve early specialized neocortical areas in parallel with cortical memory circuits in the integration of perceptual and cognitive face processing.

Type
Research Article
Copyright
© 1999 Society for Psychophysiological Research

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