Perceptual interactions between visual processing of facial familiarity and emotional expression: an event-related potentials study during task-switching

Neuroscience Letters
Arnaud LeleuMohamed Rebaï

Abstract

Models of face processing suggest that facial familiarity and expression processes involve independent visual systems. But under some conditions, the two processes interact, as when selective attention is solicited, and/or when a link is established between consecutive stimuli. To assess these assumptions during perceptual face processing, event-related potentials (ERPs) were used while subjects discriminated either familiarity or expression in a task-switching paradigm. Switched trials were designed with competitor priming, the unattended dimension being previously attended. The results indicate interactions appearing in the right hemisphere during the perceptual encoding stage (N170) when subjects processed either familiarity or expression during switched trials. These interactions gain both hemispheres during memory retrieval (P2) and in terms of accuracy. Altogether, these results confirm the critical role of the right hemisphere in perceiving faces and their expressions. Moreover, they suggest that familiarity and expression can interact in both directions.

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Citations

Mar 24, 2012·Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition·Maria SchefterBengt Winblad
Jan 7, 2014·PeerJ·Hirokata FukushimaToshikazu Hasegawa
Mar 1, 2012·Acta Psychologica·Arnaud LeleuMohamed Rebaï
Oct 2, 2015·Neuroscience·K NakajimaS Nakauchi
Jun 24, 2015·Neuropsychologia·G Barragan-JasonE J Barbeau
Jan 19, 2021·Neuroscience·Stéphanie Caharel, Bruno Rossion

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