This fMRI study (n=31) investigated the neural basis of different exploration strategies in decision-making. Results show that relative uncertainty is represented in right rostrolateral prefrontal cortex (RLPFC) and drives directed exploration, while total uncertainty is represented in right dorsolateral prefrontal cortex (DLPFC) and drives random exploration. Decision value, combining these uncertainties, is reflected in motor cortex activity. Findings support a hybrid computational architecture where separate uncertainty computations are combined to inform choice.
Publisher
Nature Communications
Published On
May 12, 2020
Authors
Momchil S. Tomov, Van Q. Truong, Rohan A. Hundia, Samuel J. Gershman
Tags
fMRI
decision-making
exploration strategies
neural basis
uncertainty
prefrontal cortex
motor cortex
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