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    Sleep deprivation alters valuation signals in the ventromedial prefrontal cortex

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    Sleep deprivation alters valuation ...
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    Genre
    Journal Article
    Date
    2011-10-01
    Author
    Libedinsky, C
    Smith, DV
    Teng, CS
    Namburi, P
    Chen, VW
    Huettel, SA
    Chee, MWL
    Subject
    VMPFC
    decision making
    reward
    sleep deprivation
    valuation
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/5519
    
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    DOI
    10.3389/fnbeh.2011.00070
    Abstract
    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 in ventromedial prefrontal cortex (VMPFC) in proportion to the corresponding change in economic preferences. These changes in preference were independent of 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. © 2011 Libedinsky, Smith, Teng, Namburi, Chen, Huettel and Chee.
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    Frontiers Media SA
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    Frontiers in Behavioral Neuroscience
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    http://dx.doi.org/10.34944/dspace/5501
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