Document Detail

In the face of emotions: event-related potentials in supraliminal and subliminal facial expression recognition.
MedLine Citation:
PMID:  16482783     Owner:  NLM     Status:  MEDLINE    
Is facial expression recognition marked by specific event-related potentials (ERPs) effects? Are conscious and unconscious elaborations of emotional facial stimuli qualitatively different processes? In Experiment 1, ERPs elicited by supraliminal stimuli were recorded when 21 participants viewed emotional facial expressions of four emotions and a neutral stimulus. Two ERP components (N2 and P3) were analyzed for their peak amplitude and latency measures. First, emotional face-specificity was observed for the negative deflection N2, whereas P3 was not affected by the content of the stimulus (emotional or neutral). A more posterior distribution of ERPs was found for N2. Moreover, a lateralization effect was revealed for negative (right lateralization) and positive (left lateralization) facial expressions. In Experiment 2 (20 participants), 1-ms subliminal stimulation was carried out. Unaware information processing was revealed to be quite similar to aware information processing for peak amplitude but not for latency. In fact, unconscious stimulation produced a more delayed peak variation than conscious stimulation.
Michela Balconi; Claudio Lucchiari
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Genetic, social, and general psychology monographs     Volume:  131     ISSN:  8756-7547     ISO Abbreviation:  Genet Soc Gen Psychol Monogr     Publication Date:  2005 Feb 
Date Detail:
Created Date:  2006-02-17     Completed Date:  2006-04-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8508368     Medline TA:  Genet Soc Gen Psychol Monogr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  41-69     Citation Subset:  IM    
Department of Psychology, Catholic University of Milan, Milan, Italy.
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MeSH Terms
Evoked Potentials*
Facial Expression*
Recognition (Psychology)*
Visual Perception

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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