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Heterogeneity in Foraging Decisions Relates to Drug Addiction and is a Marker of Midbrain Dopamine Function

      A prominent feature of addiction is the tendency to exploit a previously rewarding resource despite its diminishing returns. Such behavior is aptly captured in animal foraging models that have recently been extended to humans. Catecholaminergic systems are thought to underlie such behavior, but a precise empirical account of this is lacking in humans.
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