期刊
FRONTIERS IN BEHAVIORAL NEUROSCIENCE
卷 5, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fnbeh.2011.00070
关键词
sleep deprivation; decision making; reward; valuation; VMPFC
资金
- Defense Science and TechnologyAgency, Singapore [POD 00713897]
- National Research Foundation [0004/2008]
- Duke Institute for Brain Sciences
- NIMH [RC1-088680]
- NIMH National Research Service [F31-086248]
Even a single night of total sleep deprivation(SD) can have dramatic effects on economic decision making. Here we tested the novel hypothesis that SD influences economic decisions by altering the valuation process. Using functional magnetic resonance imaging we identified value signals related to the anticipation and the experience of monetary and social rewards (attractive female faces) .We then derived decision value signals that were predictive of each participant's Willingness to exchange money for brief views of attractive faces in an independent market task. Strikingly, SD altered decision value signals inventromedial prefrontal cortex (VMPFC) in proportion to the corresponding change in economic references. These changes in preference were independen to the effects of SD on attention and vigilance. Our results provide novel evidence that signals in VMPFC track the current state of the individual, and thus reflect not static but constructed preferences.
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