Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6848
Title: Identification and classification of facial familiarity in directed lying : an ERP study
Authors: Sun, D
Chan, CCH 
Lee, TMC
Keywords: Adult
Analysis of Variance
Electroencephalography
Evoked Potentials
Face
Humans
Male
Recognition (Psychology)
Task performance and analysis
Issue Date: 21-Feb-2012
Publisher: Public Library of Science
Source: PLoS one, 21 Feb., 2012, v. 7, no. 2, e31250, p. 1-8 How to cite?
Journal: PLoS one 
Abstract: Recognizing familiar faces is essential to social functioning, but little is known about how people identify human faces and classify them in terms of familiarity. Face identification involves discriminating familiar faces from unfamiliar faces, whereas face classification involves making an intentional decision to classify faces as “familiar” or “unfamiliar.” This study used a directed-lying task to explore the differentiation between identification and classification processes involved in the recognition of familiar faces. To explore this issue, the participants in this study were shown familiar and unfamiliar faces. They responded to these faces (i.e., as familiar or unfamiliar) in accordance with the instructions they were given (i.e., to lie or to tell the truth) while their EEG activity was recorded. Familiar faces (regardless of lying vs. truth) elicited significantly less negative-going N400f in the middle and right parietal and temporal regions than unfamiliar faces. Regardless of their actual familiarity, the faces that the participants classified as “familiar” elicited more negative-going N400f in the central and right temporal regions than those classified as “unfamiliar.” The P600 was related primarily with the facial identification process. Familiar faces (regardless of lying vs. truth) elicited more positive-going P600f in the middle parietal and middle occipital regions. The results suggest that N400f and P600f play different roles in the processes involved in facial recognition. The N400f appears to be associated with both the identification (judgment of familiarity) and classification of faces, while it is likely that the P600f is only associated with the identification process (recollection of facial information). Future studies should use different experimental paradigms to validate the generalizability of the results of this study.
URI: http://hdl.handle.net/10397/6848
EISSN: 1932-6203
DOI: 10.1371/journal.pone.0031250
Rights: © 2012 Sun et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The website of Creative Commons Attribution 3.0 Unported (CC by 3.0) is located at <http://creativecommons.org/licenses/by/3.0/>
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