COGNITIVE NEUROSCIENCE AND NEUROPSYCHOLOGYDifferential involvement of episodic and face representations in ERP repetition effectsJemel, Boutheina1 CA; Calabria, Marco1; Delvenne, Jean-François1; Crommelinck, Marc2; Bruyer, Raymond1Author Information 1Unité de Neurosciences Cognitives (NESC) 2Laboratoire de Neurophysiologie (NEFY), Faculté de Psychologie et des Sciences de l'Education, Université Catholique de Louvain-La-Neuve, Place du Cardinal Mercier 10, 1348 Louvain-La-Neuve, Belgium CACorresponding Author: firstname.lastname@example.org Received 8 October 2002; accepted 22 November 2002 NeuroReport: March 3rd, 2003 - Volume 14 - Issue 3 - p 525-530 Buy SDC Abstract The purpose of this study was to disentangle the contribution of episodic-perceptual from pre-existing memory representations of faces to repetition effects. ERPs were recorded to first and second presentations of same and different photos of famous and unfamiliar faces, in an incidental task where occasional non-targets had to be detected. Repetition of same and different photos of famous faces resulted in an N400 amplitude decrement. No such N400 repetition-induced attenuation was observed for unfamiliar faces. In addition, repetition of same photos of faces, and not different ones, gave rise to an early ERP repetition effect (starting at ∼ 350 ms) with an occipito-temporal scalp distribution. Together, these results suggest that repetition effects depend on two temporally and may be neuro-functionally distinct loci, episode-based representation and face recognition units stored in long-term memory. © 2003 Lippincott Williams & Wilkins, Inc.