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Reinforcement learning detuned in addiction: integrative and translational approaches

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TRENDS IN NEUROSCIENCES
卷 45, 期 2, 页码 96-105

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CELL PRESS
DOI: 10.1016/j.tins.2021.11.007

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Suboptimal decision-making strategies can contribute to the pathophysiology of addiction. Recent studies have used computational approaches to investigate the decision-making processes underlying addiction and have found that disruptions in different components can lead to decision-making deficits that appear similar behaviorally, but differ at the computational and likely the neurobiological level. These findings are contextualized with studies on the circuit and biological mechanisms of decision-making to develop a framework for understanding the biobehavioral mechanisms of addiction.
Suboptimal decision-making strategies have been proposed to contribute to the pathophysiology of addiction. Decision-making, however, arises from a collection of computational components that can independently influence behavior. Disruptions in these different components can lead to decision-making deficits that appear similar behaviorally, but differ at the computational, and likely the neurobiological, level. Here, we discuss recent studies that have used computational approaches to investigate the decision-making processes underlying addiction. Studies in animal models have found that value updating following positive, but not negative, outcomes is predictive of drug use, whereas value updating following negative, but not positive, outcomes is disrupted following drug self-administration. We contextualize these findings with studies on the circuit and biological mechanisms of decision-making to develop a framework for revealing the biobehavioral mechanisms of addiction.

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