Separate Face and Body Selectivity on the Fusiform Gyrus
By Rebecca F. Schwarzlose, Chris L. Baker, Nancy Kanwisher. Journal of Neuroscience, 2005
201 citations recorded by the source corpus.
Recent reports of a high response to bodies in the fusiform face area (FFA) challenge the idea that the FFA is exclusively selective for face stimuli. We examined this claim by conducting a functional magnetic resonance imaging experiment at both standard (3.125 × 3.125 × 4.0 mm) and high resolution (1.4 × 1.4 × 2.0 mm). In both experiments, regions of interest (ROIs) were defined using data from blocked localizer runs. Within each ROI, we measured the mean peak response to a variety of stimulus types in independent data from a subsequent event-related experiment. Our localizer scans identified a fusiform body area (FBA), a body-selective region reported recently by Peelen and Downing (2005) that is anatomically distinct from the extrastriate body area. The FBA overlapped with and was adjacent to the FFA in all but two participants. Selectivity of the FFA to faces and FBA to bodies was stronger for the high-resolution scans, as expected from the reduction in partial volume effects. When new ROIs were constructed for the high-resolution experiment by omitting the voxels showing overlapping selectivity for both bodies and faces in the localizer scans, the resulting FFA* ROI showed no response above control objects for body stimuli, and the FBA* ROI showed no response above control objects for face stimuli. These results demonstrate strong selectivities in distinct but adjacent regions in the fusiform gyrus for only faces in one region (the FFA*) and only bodies in the other (the FBA*).
Subfields: Cognitive Neuroscience, Computer Vision and Pattern Recognition, Experimental and Cognitive Psychology
View Paper: https://www.semanticscholar.org/paper/d491ad42e3666b94af93871cfa8b43505fb1294e
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Citations in the corpus
- A continuous semantic space describes the representation of thousands of object and action categories across the human brain (2012, background): “…et al., 1997; McCarthy et al., 1997; Rajimehr et al., 2009; Tsao et al., 2008), body parts (Downing et al., 2001; Peelen and Downing, 2005; Schwarzlose et al., 2005), outdoor scenes (Aguirre et al., 1998; Epstein and Kanwisher, 1998), and human body movements (Peelen et al., 2006;…”