Journal
NEUROPSYCHOLOGIA
Volume 47, Issue 3, Pages 639-643Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuropsychologia.2008.11.016
Keywords
Face adaptation; N170; Face viewpoint; ERPs
Funding
- Communaute Frartcaise de Belgique-Actions de Recherche Concertees [ARC 07/12-007]
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Event-related potential (ERP) studies have shown that sensitivity to individual faces emerges as early as similar to 160 ms in the human occipitotemporal cortex (N170). Here we tested whether this effect generalizes across changes in viewpoint. We recorded ERPs during an unfamiliar individual face adaptation paradigm. Participants were presented first with an adapting face (similar to 3000 ms) rotated 30 degrees in depth, followed by a second face (200ms) in a frontal view of either the same or a different identity. The N170 amplitude at right occipitotemporal sites to the second stimulus was reduced for repeated as compared to different faces. A bilateral adaptation effect emerged after 250 ms following stimulus onset. These observations indicate that individual face representations activated as early as 160 ms after stimulus onset in the right hemisphere show a substantial degree of generalization across viewpoints. (C) 2008 Elsevier Ltd. All rights reserved.
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