Journal
TRENDS IN COGNITIVE SCIENCES
Volume 16, Issue 9, Pages 467-475Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tics.2012.07.007
Keywords
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Funding
- Division Of Behavioral and Cognitive Sci
- Direct For Social, Behav & Economic Scie [0959140] Funding Source: National Science Foundation
- NIDA NIH HHS [R01 DA033077] Funding Source: Medline
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It has long been recognized that the striatum is composed of distinct functional sub-units that are part of multiple cortico-striatal-thalamic circuits. Contemporary research has focused on the contribution of striatal subregions to three main phenomena: learning of associations between stimuli, actions and rewards; selection between competing response alternatives; and motivational modulation of motor behavior. Recent proposals have argued for a functional division of the striatum along these lines, attributing, for example, learning to one region and performance to another. Here, we consider empirical data from human and animal studies, as well as theoretical notions from both the psychological and computational literatures, and conclude that striatal sub-regions instead differ most clearly in terms of the associations being encoded in each region.
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