Face selective patches in marmoset frontal cortex

David J. Schaeffer (), Janahan Selvanayagam, Kevin D. Johnston, Ravi S. Menon, Winrich A. Freiwald and Stefan Everling
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David J. Schaeffer: University of Western Ontario
Janahan Selvanayagam: University of Western Ontario
Kevin D. Johnston: University of Western Ontario
Ravi S. Menon: University of Western Ontario
Winrich A. Freiwald: The Rockefeller University
Stefan Everling: University of Western Ontario

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract In humans and macaque monkeys, socially relevant face processing is accomplished via a distributed functional network that includes specialized patches in frontal cortex. It is unclear whether a similar network exists in New World primates, who diverged ~35 million years from Old World primates. The common marmoset is a New World primate species ideally placed to address this question given their complex social repertoire. Here, we demonstrate the existence of a putative high-level face processing network in marmosets. Like Old World primates, marmosets show differential activation in anterior cingulate and lateral prefrontal cortices while they view socially relevant videos of marmoset faces. We corroborate the locations of these frontal regions by demonstrating functional and structural connectivity between these regions and temporal lobe face patches. Given the evolutionary separation between macaques and marmosets, our results suggest this frontal network specialized for social face processing predates the separation between Platyrrhini and Catarrhini.

Date: 2020
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DOI: 10.1038/s41467-020-18692-2

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