期刊
EUROPEAN JOURNAL OF NEUROSCIENCE
卷 29, 期 11, 页码 2225-2232出版社
WILEY
DOI: 10.1111/j.1460-9568.2009.06796.x
关键词
basal ganglia; fMRI; instrumental conditioning; putamen; reward
资金
- Gordon and Betty Moore Foundation
- National Institute of Mental Health [RO3MH075763]
- NATIONAL INSTITUTE OF MENTAL HEALTH [R03MH075763] Funding Source: NIH RePORTER
Habits are characterized by an insensitivity to their consequences and, as such, can be distinguished from goal-directed actions. The neural basis of the development of demonstrably outcome-insensitive habitual actions in humans has not been previously characterized. In this experiment, we show that extensive training on a free-operant task reduces the sensitivity of participants' behavior to a reduction in outcome value. Analysis of functional magnetic resonance imaging data acquired during training revealed a significant increase in task-related cue sensitivity in a right posterior putamen-globus pallidus region as training progressed. These results provide evidence for a shift from goal-directed to habit-based control of instrumental actions in humans, and suggest that cue-driven activation in a specific region of dorsolateral posterior putamen may contribute to the habitual control of behavior in humans.
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