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Abstract #0755

Face and Body Selective Regions of the Marmoset Extrastriate Visual Cortex

ChiaChun Hung 1,2 , Cecil Chern-Chyi Yen 1 , Jennifer L Ciuchta 1 , Daniel Papoti 1 , David A Leopold 2 , and Afonso C Silva 1

1 CMU/LFMI/NINDS, National Institutes of Health, Bethesda, MD, United States, 2 SCNI/LN/NIMH, National Institutes of Health, Bethesda, MD, United States

The ventral temporal cortex of humans and macaques is marked by multiple, distinct regions specialized for the visual processing of faces and bodies. Here we demonstrate a similar category-specific organization in the common marmoset (Callithrix jacchus), a small, New World monkey. By using functional magnetic resonance imaging (fMRI) and electrocorticography (ECoG) in awake, trained animals, we demonstrate six face-selective and three adjacent body-selective cortical regions in the marmoset visual cortex. These findings suggest that key elements of ventral stream specialization for face and body processing were present in a common anthropoid primate ancestor at least 35 million years ago.

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