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Neuron. 2012 Aug 9;75(3):418-24. doi: 10.1016/j.neuron.2012.03.042.

Dopamine enhances model-based over model-free choice behavior.

Author information

  • 1Wellcome Trust Centre for Neuroimaging, University College London, London WC1N 3BG, UK. kwunder@gmail.com

Abstract

Decision making is often considered to arise out of contributions from a model-free habitual system and a model-based goal-directed system. Here, we investigated the effect of a dopamine manipulation on the degree to which either system contributes to instrumental behavior in a two-stage Markov decision task, which has been shown to discriminate model-free from model-based control. We found increased dopamine levels promote model-based over model-free choice.

Copyright © 2012 Elsevier Inc. All rights reserved.

PMID:
22884326
[PubMed - indexed for MEDLINE]
PMCID:
PMC3417237
Free PMC Article

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