Table of Contents Author Guidelines Submit a Manuscript
Behavioural Neurology
Volume 19 (2008), Issue 1-2, Pages 75-79
http://dx.doi.org/10.1155/2008/561476

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

Laurence Dricot,1 Bettina Sorger,2,3 Christine Schiltz,1 Rainer Goebel,2,3 and Bruno Rossion1,4

1Department of Neurophysiology, University of Louvain, Louvain-la-Neuve, Belgium
2Department of Cognitive Neuroscience, Maastricht University, Maastricht, The Netherlands
3Maastricht Brain Imaging Center (M-BIC), Maastricht, The Netherlands
4Department of Cognitive Development, University of Louvain, Louvain-la-Neuve, Belgium

Received 31 March 2008; Accepted 31 March 2008

Copyright © 2008 Hindawi Publishing Corporation and the authors. 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.

Abstract

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.