Document Detail

Distortions in the brain? ERP effects of caricaturing familiar and unfamiliar faces.
MedLine Citation:
PMID:  18634766     Owner:  NLM     Status:  MEDLINE    
We report two experiments in which participants classified familiarity and rated best-likeness of photorealistic spatial caricatures and anti-caricatures (up to a distortion level of 30%) in comparison to veridical pictures of famous faces (Experiment 1) and personally familiar faces (Experiment 2). In both experiments there was no evidence for a caricature advantage in the behavioural data. In line with previous research, caricatures were perceived as worse likenesses than veridical pictures and moderate anti-caricatures. In Experiment 2, ERPs for familiar faces were largely unaffected by spatial caricaturing, whereas clear effects of caricaturing were observed for unfamiliar faces, for which caricaturing elicited increased occipito-temporal N170 and N250 responses. Whereas increases in N170 amplitude were limited to the first half of the experiment, increases in N250 were largest after a number of stimulus repetitions in the second half of the experiment. In the second half, ERPs to caricatured unfamiliar faces became more similar to ERPs to familiar faces, whereas ERP differences between familiar and unfamiliar faces remained prominent for veridicals and anti-caricatures. In the context of previous reports of caricature effects for line-drawings, these results imply that non-spatial (e.g., texture) information plays a prominent role for familiar face recognition, whereas spatial caricaturing may be particularly important for the recognition of unfamiliar faces, by increasing their distinctiveness.
Jürgen M Kaufmann; Stefan R Schweinberger
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Publication Detail:
Type:  Clinical Trial; Journal Article     Date:  2008-07-02
Journal Detail:
Title:  Brain research     Volume:  1228     ISSN:  0006-8993     ISO Abbreviation:  Brain Res.     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-08-19     Completed Date:  2008-11-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0045503     Medline TA:  Brain Res     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  177-88     Citation Subset:  IM    
Department of Psychology, Friedrich-Schiller-University of Jena, Am Steiger 3, Haus 1, 07743 Jena, Germany.
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MeSH Terms
Attention / physiology
Brain / physiology
Caricatures as Topic
Discrimination (Psychology) / physiology*
Evoked Potentials, Visual / physiology*
Memory / physiology
Pattern Recognition, Visual / physiology*
Photic Stimulation / methods
Psychomotor Performance / physiology
Reaction Time / physiology
Recognition (Psychology) / physiology*
Visual Perception / physiology

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

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