Ventromedial prefrontal cortex compression during concept learning

Michael L. Mack (), Alison R. Preston and Bradley C. Love
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Michael L. Mack: University of Toronto
Alison R. Preston: The University of Texas at Austin
Bradley C. Love: University College London

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

Abstract: Abstract Prefrontal cortex (PFC) is thought to support the ability to focus on goal-relevant information by filtering out irrelevant information, a process akin to dimensionality reduction. Here, we test this dimensionality reduction hypothesis by relating a data-driven approach to characterizing the complexity of neural representation with a theoretically-supported computational model of learning. We find evidence of goal-directed dimensionality reduction within human ventromedial PFC during learning. Importantly, by using computational predictions of each participant’s attentional strategies during learning, we find that that the degree of neural compression predicts an individual’s ability to selectively attend to concept-specific information. These findings suggest a domain-general mechanism of learning through compression in ventromedial PFC.

Date: 2020
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DOI: 10.1038/s41467-019-13930-8

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