A Bayesian Observer Model of Drug Craving

JAMA PSYCHIATRY (02/15) – The reinforcement learning theory of drug addiction has been influential for decades… However, many empirical findings remain unaddressed. In particular, accumulating evidence suggests that DA, delivered by either addictive drugs or by pharmacological treatments, such as the nicotine replacement therapy, is not sufficient to reduce craving. Craving persists even after compulsive drug-taking behavior stops, suggesting that craving and drug-seeking behavior are 2 distinct processes, despite the fact that they are often homogenized in laboratory settings. Read more

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