Reference : Evidence for individual face discrimination in non-face selective areas of the visual...
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
Social & behavioral sciences, psychology : Theoretical & cognitive psychology
Evidence for individual face discrimination in non-face selective areas of the visual cortex in acquired prosopagnosia
Dricot, Laurence []
Sorger, Bettina []
Schiltz, Christine mailto [University of Luxembourg > Faculty of Language and Literature, Humanities, Arts and Education (FLSHASE) > Educational Measurement and Applied Cognitive Science (EMACS) > ; Université Catholique de Louvain - UCL > Laboratoire de Neurophysiologie]
Goebel, Rainer []
Rossion, Bruno []
Behavioral Neurology
IOS Press
The Netherlands
[en] prosopagnosia ; fMRI ; fusiform gyrus ; FFA ; OFA ; vLOC ; adaptation
[en] 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 prosopagnosic patient encompasses the 'OFA' but preserves the 'FFA' and LOC. 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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