Greater impulsivity is associated with decreased brain activation in obese women during a delay discounting task.
Impulsivity and poor inhibitory control are associated with higher rates of delay discounting (DD), or a greater preference for smaller, more immediate rewards at the expense of larger, but delayed rewards. Of the many functional magnetic resonance imaging (fMRI) studies of DD, few have investigated...
| Publicado en: | Brain Imaging & Behavior Vol. 7; no. 2; pp. 116 - 129 |
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| Autores principales: | , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Jun2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104071955&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104071955 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 19317557 3GSC jtl: Brain Imaging & Behavior issn: 19317557 maglogo: N pubinfo: dt: Jun2013 vid: 7 iid: 2 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104071955 NLM22948956 2012102318 10.1007/s11682-012-9201-4 NLM22948956 PMC3561478 104071955 ppf: 116 ppct: 13 formats: fmt: @attributes: type: P tig: atl: Greater impulsivity is associated with decreased brain activation in obese women during a delay discounting task. aug: au: Stoeckel, Luke E Murdaugh, Donna L Cox, James E Cook 3rd, Edwin W Weller, Rosalyn E Cook, Edwin W 3rd affil: Department of Psychology, University of Alabama at Birmingham (UAB), CH 415, 1720 2nd Avenue South, Birmingham, AL, 35294-1170, USA, lstoeckel@partners.org. sug: subj: Brain Physiology Behavior Obesity Physiopathology Psychomotor Performance Reward Adult Decision Making Mental Processes Female Magnetic Resonance Imaging Middle Age Obesity Psychosocial Factors Reaction Time Physiology Young Adult Adult: 19-44 years Middle Aged: 45-64 years Female ab: Impulsivity and poor inhibitory control are associated with higher rates of delay discounting (DD), or a greater preference for smaller, more immediate rewards at the expense of larger, but delayed rewards. Of the many functional magnetic resonance imaging (fMRI) studies of DD, few have investigated the correlation between individual differences in DD rate and brain activation related to DD trial difficulty, with difficult DD trials expected to activate putative executive function brain areas involved in impulse control. In the current study, we correlated patterns of brain activation as measured by fMRI during difficult vs. easy trials of a DD task with DD rate (k) in obese women. Difficulty was defined by how much a reward choice deviated from an individual's 'indifference point', or the point where the subjective preference for an immediate and a delayed reward was approximately equivalent. We found that greater delay discounting was correlated with less modulation of activation in putative executive function brain areas, such as the middle and superior frontal gyri and inferior parietal lobule, in response to difficult compared to easy DD trials. These results support the suggestion that increased impulsivity is associated with deficient functioning of executive function areas of the brain. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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