Brain signals of face processing as revealed by event-related potential
EntityUAM. Departamento de Psicología Biológica y de la Salud
PublisherHindawi Publishing Corporation
10.1155/2015/514361Behavioural Neurology 2015 (2015): 514361
ISSN0953-4180 (print); 1875-8584 (online)
Funded byThis work was supported by “Ministerio de Economía y Competitividad” (Spain, I + D + I National Programme, PSI2013-46007-P)
ProjectGobierno de España. PSI2013-46007-P
SubjectsPattern recognition; Evoked potentials; Perceptual decision making; Psicología
Rights© 2015 Ela I. Olivares et al.
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
We analyze the functional significance of different event-related potentials (ERPs) as electrophysiological indices of face perception and face recognition, according to cognitive and neurofunctional models of face processing. Initially, the processing of faces seems to be supported by early extrastriate occipital cortices and revealed by modulations of the occipital P1. This early response is thought to reflect the detection of certain primary structural aspects indicating the presence grosso modo of a face within the visual field.The posterior-temporal N170 is more sensitive to the detection of faces as complex-structured stimuli and, therefore, to the presence of its distinctive organizational characteristics prior to within-category identification. In turn, the relatively late and probably more rostrally generated N250r and N400-like responses might respectively indicate processes of access and retrieval of face-related information, which is stored in long-term memory (LTM). New methods of analysis of electrophysiological and neuroanatomical data, namely, dynamic causal modeling, single-trial and time-frequency analyses, are highly recommended to advance in the knowledge of those brain mechanisms concerning face processing
Google Scholar:Olivares Carreño, Ela Isabel - Iglesias Dorado, Jaime - Saavedra, Cristina - Trujillo-Barreto, Nelson J. - Valdés-Sosa, Mitchell
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