Time-of-day differences and short-term stability of the neural response to monetary reward: a pilot study.
Identifieur interne : 001915 ( PubMed/Curation ); précédent : 001914; suivant : 001916Time-of-day differences and short-term stability of the neural response to monetary reward: a pilot study.
Auteurs : Brant P. Hasler [États-Unis] ; Erika E. Forbes [États-Unis] ; Peter L. Franzen [États-Unis]Source :
- Psychiatry research [ 1872-7123 ] ; 2014.
Descripteurs français
- KwdFr :
- Adulte, Affect, Corps strié (physiopathologie), Encéphale (physiopathologie), Femelle, Horloges circadiennes, Humains, Imagerie par résonance magnétique, Jeune adulte, Mâle, Neuroimagerie fonctionnelle, Projets pilotes, Revenu, Rythme circadien, Récompense, Sommeil (physiologie), Vigilance (physiologie).
- MESH :
- physiologie : Sommeil, Vigilance.
- physiopathologie : Corps strié, Encéphale.
- Adulte, Affect, Femelle, Horloges circadiennes, Humains, Imagerie par résonance magnétique, Jeune adulte, Mâle, Neuroimagerie fonctionnelle, Projets pilotes, Revenu, Rythme circadien, Récompense.
English descriptors
- KwdEn :
- MESH :
- physiology : Sleep, Wakefulness.
- physiopathology : Brain, Corpus Striatum.
- Adult, Affect, Circadian Clocks, Circadian Rhythm, Female, Functional Neuroimaging, Humans, Income, Magnetic Resonance Imaging, Male, Pilot Projects, Reward, Young Adult.
Abstract
Human and animal studies indicate that reward function is modulated by the circadian clock that governs our daily sleep/wake rhythm. For example, a robust circadian rhythm exists in positive affect, which is lower in the morning hours and peaks in the afternoon. A handful of functional neuroimaging studies suggest that systematic diurnal variation exists in brain activity related to other functions, but no published human studies have examined daily variation in the neural processing of reward. In the present study, we attempt to advance this literature by using functional neuroimaging methods to examine time-of-day changes in the responsivity of the reward circuit. Using a within-person design and a functional magnetic resonance imaging (fMRI) monetary reward task, we compared morning and afternoon reward-related brain activation in a sample of healthy young adults within 24h. Region of interest analyses focused on the striatum, and we hypothesized greater reward activation in the afternoon, concordant with the circadian peak in positive affect. Results were consistent with our hypothesis. In addition, we counterbalanced the order of morning and afternoon scans in order to explore the short-term stability of the neural response. Whole-brain analyses showed a markedly higher reactivity to reward throughout the brain in the first scan relative to the second scan, consistent with habituation to the monetary reward stimuli. However, these effects did not appear to explain the time-of-day findings. In summary, we report the first preliminary evidence of circadian variation in the neural processing of reward. These findings have both methodological and theoretical implications.
DOI: 10.1016/j.pscychresns.2014.07.005
PubMed: 25092525
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In addition, we counterbalanced the order of morning and afternoon scans in order to explore the short-term stability of the neural response. Whole-brain analyses showed a markedly higher reactivity to reward throughout the brain in the first scan relative to the second scan, consistent with habituation to the monetary reward stimuli. However, these effects did not appear to explain the time-of-day findings. In summary, we report the first preliminary evidence of circadian variation in the neural processing of reward. These findings have both methodological and theoretical implications.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25092525</PMID><DateCreated><Year>2014</Year><Month>09</Month><Day>06</Day></DateCreated><DateCompleted><Year>2014</Year><Month>12</Month><Day>05</Day></DateCompleted><DateRevised><Year>2016</Year><Month>10</Month><Day>19</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1872-7123</ISSN><JournalIssue CitedMedium="Internet"><Volume>224</Volume><Issue>1</Issue><PubDate><Year>2014</Year><Month>Oct</Month><Day>30</Day></PubDate></JournalIssue><Title>Psychiatry research</Title><ISOAbbreviation>Psychiatry Res</ISOAbbreviation></Journal><ArticleTitle>Time-of-day differences and short-term stability of the neural response to monetary reward: a pilot study.</ArticleTitle><Pagination><MedlinePgn>22-7</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.pscychresns.2014.07.005</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0925-4927(14)00177-2</ELocationID><Abstract><AbstractText>Human and animal studies indicate that reward function is modulated by the circadian clock that governs our daily sleep/wake rhythm. 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In addition, we counterbalanced the order of morning and afternoon scans in order to explore the short-term stability of the neural response. Whole-brain analyses showed a markedly higher reactivity to reward throughout the brain in the first scan relative to the second scan, consistent with habituation to the monetary reward stimuli. However, these effects did not appear to explain the time-of-day findings. In summary, we report the first preliminary evidence of circadian variation in the neural processing of reward. These findings have both methodological and theoretical implications.</AbstractText><CopyrightInformation>Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Hasler</LastName><ForeName>Brant P</ForeName><Initials>BP</Initials><AffiliationInfo><Affiliation>Department of Psychiatry, University of Pittsburgh School of Medicine, 3811 O'Hara Street, Pittsburgh, PA 15213 USA. 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