Journal
NEURON
Volume 62, Issue 5, Pages 733-743Publisher
CELL PRESS
DOI: 10.1016/j.neuron.2009.05.014
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Funding
- Wellcome Trust
- EPSRC
- MRC
- Medical Research Council [G0501316, G0700399, G0600994] Funding Source: researchfish
- MRC [G0501316, G0600994, G0700399] Funding Source: UKRI
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Behavioral flexibility is the hallmark of goal-directed behavior. Whereas a great deal is known about the neural substrates of behavioral adjustment when it is explicitly cued by features of the external environment, little is known about how we adapt our behavior when such changes are made on the basis of uncertain evidence. Using a Bayesian reinforcement-learning model and fMRI, we show that frontopolar cortex (FPC) tracks the relative advantage in favor of switching to a foregone alternative when choices are made voluntarily. Changes in FPC functional connectivity occur when subjects finally decide to switch to the alternative behavior. Moreover, interindividual variation in the FPC signal predicts interindividual differences in effectively adapting behavior. By contrast, ventromedial prefrontal cortex (vmPFC) encodes the relative value of the current decision. Collectively, these findings reveal complementary prefrontal computations essential for promoting short- and long-term behavioral flexibility.
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