Superior Neuronal Detection of Snakes and Conspecific Faces in the Macaque Medial Prefrontal Cortex

Cerebral Cortex
Ha Trong DinhH Nishijo

Abstract

Snakes and conspecific faces are quickly and efficiently detected in primates. Because the medial prefrontal cortex (mPFC) has been implicated in attentional allocation to biologically relevant stimuli, we hypothesized that it might also be highly responsive to snakes and conspecific faces. In this study, neuronal responses in the monkey mPFC were recorded, while monkeys discriminated 8 categories of visual stimuli. Here, we show that the monkey mPFC neuronal responses to snakes and conspecific faces were unique. First, the ratios of the neurons that responded strongly to snakes and monkey faces were greater than those of the neurons that responded strongly to the other stimuli. Second, mPFC neurons responded stronger and faster to snakes and monkey faces than the other categories of stimuli. Third, neuronal responses to snakes were unaffected by low-pass filtering of the images. Finally, activity patterns of responsive mPFC neurons discriminated snakes from the other stimuli in the second 50 ms period and monkey faces in the third period after stimulus onset. These response features indicate that the mPFC processes fast and coarse visual information of snakes and monkey faces, and support the hypothesis that snakes and social ...Continue Reading

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Citations

Jul 13, 2019·PLoS Computational Biology·Stefano RecanatesiEric Shea-Brown
Mar 12, 2020·Frontiers in Systems Neuroscience·Quang Van LeHisao Nishijo
Jun 28, 2018·Frontiers in Neuroscience·Hisao NishijoMarco Tamietto
Jan 3, 2021·Animal Cognition·Andrew C Gallup, Kaitlyn Meyers
Jan 30, 2021·Scientific Reports·Allison R LauLynne A Isbell

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