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Evidence for Individual Face Discrimination in Non-Face Selective Areas of the Visual Cortex in Acquired Prosopagnosia

Two areas in the human occipito-temporal cortex respond preferentially to faces: ‘the fusiform face area’ (‘FFA’) and the ‘occipital face area’ (‘OFA’). However, it is unclear whether these areas have an exclusive role in processing faces, or if sub-maximal responses in other visual areas such as th...

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Autores principales: Dricot, Laurence, Sorger, Bettina, Schiltz, Christine, Goebel, Rainer, Rossion, Bruno
Formato: Online Artículo Texto
Lenguaje:English
Publicado: IOS Press 2008
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452458/
https://www.ncbi.nlm.nih.gov/pubmed/18413922
http://dx.doi.org/10.1155/2008/561476
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author Dricot, Laurence
Sorger, Bettina
Schiltz, Christine
Goebel, Rainer
Rossion, Bruno
author_facet Dricot, Laurence
Sorger, Bettina
Schiltz, Christine
Goebel, Rainer
Rossion, Bruno
author_sort Dricot, Laurence
collection PubMed
description Two areas in the human occipito-temporal cortex respond preferentially to faces: ‘the fusiform face area’ (‘FFA’) and the ‘occipital face area’ (‘OFA’). However, it is unclear whether these areas have an exclusive role in processing faces, or if sub-maximal responses in other visual areas such as the lateral occipital complex (LOC) are also involved. To clarify this issue, we tested a brain-damaged patient (PS) presenting a face-selective impairment with functional magnetic resonance imaging (fMRI). The right hemisphere lesion of the prosoagnosic patient encompasses the ‘OFA’ but preserves the ‘FFA’ and LOC [14,16]. Using fMRI-adaptation, we found a larger response to different faces than repeated faces in the ventral part of the LOC both for normals and the patient, next to her right hemisphere lesion. This observation indicates that following prosopagnosia, areas that do not respond preferentially to faces such as the ventral part of the LOC (vLOC) may still be recruited to subtend residual perception of individual faces.
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spelling pubmed-54524582017-06-14 Evidence for Individual Face Discrimination in Non-Face Selective Areas of the Visual Cortex in Acquired Prosopagnosia Dricot, Laurence Sorger, Bettina Schiltz, Christine Goebel, Rainer Rossion, Bruno Behav Neurol Research Article Two areas in the human occipito-temporal cortex respond preferentially to faces: ‘the fusiform face area’ (‘FFA’) and the ‘occipital face area’ (‘OFA’). However, it is unclear whether these areas have an exclusive role in processing faces, or if sub-maximal responses in other visual areas such as the lateral occipital complex (LOC) are also involved. To clarify this issue, we tested a brain-damaged patient (PS) presenting a face-selective impairment with functional magnetic resonance imaging (fMRI). The right hemisphere lesion of the prosoagnosic patient encompasses the ‘OFA’ but preserves the ‘FFA’ and LOC [14,16]. Using fMRI-adaptation, we found a larger response to different faces than repeated faces in the ventral part of the LOC both for normals and the patient, next to her right hemisphere lesion. This observation indicates that following prosopagnosia, areas that do not respond preferentially to faces such as the ventral part of the LOC (vLOC) may still be recruited to subtend residual perception of individual faces. IOS Press 2008 2008-04-11 /pmc/articles/PMC5452458/ /pubmed/18413922 http://dx.doi.org/10.1155/2008/561476 Text en Copyright © 2008 Hindawi Publishing Corporation and the authors. http://creativecommons.org/licenses/by/3.0 This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Dricot, Laurence
Sorger, Bettina
Schiltz, Christine
Goebel, Rainer
Rossion, Bruno
Evidence for Individual Face Discrimination in Non-Face Selective Areas of the Visual Cortex in Acquired Prosopagnosia
title Evidence for Individual Face Discrimination in Non-Face Selective Areas of the Visual Cortex in Acquired Prosopagnosia
title_full Evidence for Individual Face Discrimination in Non-Face Selective Areas of the Visual Cortex in Acquired Prosopagnosia
title_fullStr Evidence for Individual Face Discrimination in Non-Face Selective Areas of the Visual Cortex in Acquired Prosopagnosia
title_full_unstemmed Evidence for Individual Face Discrimination in Non-Face Selective Areas of the Visual Cortex in Acquired Prosopagnosia
title_short Evidence for Individual Face Discrimination in Non-Face Selective Areas of the Visual Cortex in Acquired Prosopagnosia
title_sort evidence for individual face discrimination in non-face selective areas of the visual cortex in acquired prosopagnosia
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5452458/
https://www.ncbi.nlm.nih.gov/pubmed/18413922
http://dx.doi.org/10.1155/2008/561476
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