TY - JOUR
T1 - Representations of facial identity in the left hemisphere require right hemisphere processing
AU - Verosky, Sara C.
AU - Turk-Browne, Nicholas B.
PY - 2012/4
Y1 - 2012/4
N2 - A quintessential example of hemispheric specialization in the human brain is that the right hemisphere is specialized for face perception. However, because the visual system is organized contralaterally, what happens when faces appear in the right visual field and are projected to the nonspecialized left hemisphere? We used divided field presentation and fMRI adaptation to test the hypothesis that the left hemisphere can recognize faces, but only with support from the right hemisphere. Consistent with this hypothesis, facial identity adaptation was observed in the left fusiform face area when a face had previously been processed by the right hemisphere, but not when it had only been processed by the left hemisphere. These results imply that facial identity information is transferred from the right hemisphere to the left hemisphere, and that the left hemisphere can represent facial identity but is less efficient at extracting this information by itself.
AB - A quintessential example of hemispheric specialization in the human brain is that the right hemisphere is specialized for face perception. However, because the visual system is organized contralaterally, what happens when faces appear in the right visual field and are projected to the nonspecialized left hemisphere? We used divided field presentation and fMRI adaptation to test the hypothesis that the left hemisphere can recognize faces, but only with support from the right hemisphere. Consistent with this hypothesis, facial identity adaptation was observed in the left fusiform face area when a face had previously been processed by the right hemisphere, but not when it had only been processed by the left hemisphere. These results imply that facial identity information is transferred from the right hemisphere to the left hemisphere, and that the left hemisphere can represent facial identity but is less efficient at extracting this information by itself.
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U2 - 10.1162/jocn_a_00196
DO - 10.1162/jocn_a_00196
M3 - Article
C2 - 22264197
AN - SCOPUS:84857553204
SN - 0898-929X
VL - 24
SP - 1006
EP - 1017
JO - Journal of cognitive neuroscience
JF - Journal of cognitive neuroscience
IS - 4
ER -