| Impaired holistic processing of unfamiliar individual faces in acquired prosopagnosia. | |
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MedLine Citation:
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PMID: 19944710 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Prosopagnosia is an impairment at individualizing faces that classically follows brain damage. Several studies have reported observations supporting an impairment of holistic/configural face processing in acquired prosopagnosia. However, this issue may require more compelling evidence as the cases reported were generally patients suffering from integrative visual agnosia, and the sensitivity of the paradigms used to measure holistic/configural face processing in normal individuals remains unclear. Here we tested a well-characterized case of acquired prosopagnosia (PS) with no object recognition impairment, in five behavioral experiments (whole/part and composite face paradigms with unfamiliar faces). In all experiments, for normal observers we found that processing of a given facial feature was affected by the location and identity of the other features in a whole face configuration. In contrast, the patient's results over these experiments indicate that she encodes local facial information independently of the other features embedded in the whole facial context. These observations and a survey of the literature indicate that abnormal holistic processing of the individual face may be a characteristic hallmark of prosopagnosia following brain damage, perhaps with various degrees of severity. |
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Authors:
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Meike Ramon; Thomas Busigny; Bruno Rossion |
Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't Date: 2009-11-26 |
Journal Detail:
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Title: Neuropsychologia Volume: 48 ISSN: 1873-3514 ISO Abbreviation: Neuropsychologia Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-02-24 Completed Date: 2010-06-09 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0020713 Medline TA: Neuropsychologia Country: England |
Other Details:
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Languages: eng Pagination: 933-44 Citation Subset: IM |
Copyright Information:
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Copyright (c) 2009 Elsevier Ltd. All rights reserved. |
Affiliation:
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Universit? Catholique de Louvain, Louvain-la-Neuve, Belgium. meike.ramon@uclouvain.be |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Brain Injuries
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complications Face Female Humans Male Middle Aged Neuropsychological Tests Pattern Recognition, Visual* Photic Stimulation Prosopagnosia / etiology, psychology* Psychomotor Performance* Reaction Time Young Adult |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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