Prefrontal neuronal dynamics in the absence of task execution

Shusen Pu, Wenhao Dang, Xue-Lian Qi and Christos Constantinidis ()
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Shusen Pu: Vanderbilt University
Wenhao Dang: Vanderbilt University
Xue-Lian Qi: Wake Forest School of Medicine
Christos Constantinidis: Vanderbilt University

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Prefrontal cortical activity represents stimuli in working memory tasks in a low-dimensional manifold that transforms over the course of a trial. Such transformations reflect specific cognitive operations, so that, for example, the rotation of stimulus representations is thought to reduce interference by distractor stimuli. Here we show that rotations occur in the low-dimensional activity space of prefrontal neurons in naïve male monkeys (Macaca mulatta), while passively viewing familiar stimuli. Moreover, some aspects of these rotations remain remarkably unchanged after training to perform working memory tasks. Significant training effects are still present in population dynamics, which further distinguish correct and error trials during task execution. Our results reveal automatic functions of prefrontal neural circuits allow transformations that may aid cognitive flexibility.

Date: 2024
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DOI: 10.1038/s41467-024-50717-y

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