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Arbitration between...
Arbitration between controlled and impulsive choices
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Economides, M. (author)
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- Guitart-Masip, M. (author)
- Stockholms universitet,Centrum för forskning om äldre och åldrande (ARC), (tills m KI),University College London, United Kingdom
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Kurth-Nelson, Z. (author)
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Dolan, R. J. (author)
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(creator_code:org_t)
- Elsevier BV, 2015
- 2015
- English.
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In: NeuroImage. - : Elsevier BV. - 1053-8119 .- 1095-9572. ; 109, s. 206-216
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https://doi.org/10.1...
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Abstract
Subject headings
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- The impulse to act for immediate reward often conflicts with more deliberate evaluations that support long-term benefit. The neural architecture that negotiates this conflict remains unclear. One account proposes a single neural circuit that evaluates both immediate and delayed outcomes, while another outlines separate impulsive and patient systems that compete for behavioral control. Here we designed a task in which a complex payout structure divorces the immediate value of acting from the overall long-term value, within the same outcome modality. Using model-based fMRI in humans, we demonstrate separate neural representations of immediate and long-term values, with the former tracked in the anterior caudate (AC) and the latter in the ventromedial prefrontal cortex (vmPFC). Crucially, when subjects' choices were compatible with long-run consequences, value signals in AC were down-weighted and those in vmPFC were enhanced, while the opposite occurred when choice was impulsive. Thus, our data implicate a trade-off in value representation between AC and vmPFC as underlying controlled versus impulsive choice.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Neurovetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Neurosciences (hsv//eng)
Keyword
- Decision-making
- fMRI
- Self-control
- Value
- Ventromedial prefrontal cortex
- Striatum
Publication and Content Type
- ref (subject category)
- art (subject category)
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