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Impulse control and restrained eating among young women: Evidence for compensatory cortical activation during a chocolate-specific delayed discounting task
Debo Dong1,2,3; Yulin Wang1,2,4; Todd Jackson1,2,5; Shuaiyu Chen1,2; Yu Wang1,2; Feng Zhou3; Hong Chen1,2
2016-10-01
Source PublicationAppetite
ISSN0195-6663
Volume105Pages:477-486
Abstract

Theory and associated research indicate that people with elevated restrained eating (RE) scores have higher risk for binge eating, future bulimic symptom onset and weight gain. Previous imaging studies have suggested hyper-responsive reward brain area activation in response to food cues contributes to this risk but little is known about associated neural impulse control mechanisms, especially when considering links between depleted cognitive resources related to unsuccessful RE. Towards illuminating this issue, we used a chocolate-specific delayed discounting (DD) task to investigate relations between RE scores, behavior impulsivity, and corresponding neural impulse control correlates in a functional magnetic resonance imaging (fMRI) study of 27 young women. Specifically, participants were required to choose between more immediate, smaller versus delayed, larger hypothetical chocolate rewards following initial consumption of a chocolate. As predicted, RE scores were correlated positively with behavior impulse control levels. More critically, higher RE scores were associated with stronger activation in impulse control region, the dorsal-lateral prefrontal cortex (DLPFC) during the completion of difficult decision trials reflecting higher cognitive demands and resource depletion relative to easy decision trials. Exploratory analyses revealed a positive correlation between RE scores and activity in a reward system hub, the right striatum. Moreover, a positive correlation between left DLPFC and striatum activation was posited to reflect, in part, impulse control region compensation in response to stronger reward signal among women with RE elevations. Findings suggested impulse control lapses may contribute to difficulties in maintaining RE, particularly when cognitive demands are high.

KeywordCompensatory Effect Dlpfc Functional Magnetic Resonance Imaging Impulse-control Restrained Eating
DOIhttps://doi.org/10.1016/j.appet.2016.05.017
URLView the original
Indexed BySSCI
Language英语
WOS Research AreaBehavioral Sciences ; Nutrition & Dietetics
WOS SubjectBehavioral Sciences ; Nutrition & Dietetics
WOS IDWOS:000382345300056
PublisherACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD, 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND
Fulltext Access
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF PSYCHOLOGY
Corresponding AuthorDebo Dong; Yulin Wang; Todd Jackson; Shuaiyu Chen; Yu Wang; Feng Zhou; Hong Chen
Affiliation1.Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing 400715, China
2.School of Psychology, Southwest University, Chongqing 400715, China
3.School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China
4.Department of Biological Psychology, Vrije Universiteit Brussel (VUB), Brussels, Belgium
5.Department of Psychology, University of Macau, Taipa, Macau 999078, China
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Debo Dong,Yulin Wang,Todd Jackson,et al. Impulse control and restrained eating among young women: Evidence for compensatory cortical activation during a chocolate-specific delayed discounting task[J]. Appetite,2016,105:477-486.
APA Debo Dong.,Yulin Wang.,Todd Jackson.,Shuaiyu Chen.,Yu Wang.,...&Hong Chen.(2016).Impulse control and restrained eating among young women: Evidence for compensatory cortical activation during a chocolate-specific delayed discounting task.Appetite,105,477-486.
MLA Debo Dong,et al."Impulse control and restrained eating among young women: Evidence for compensatory cortical activation during a chocolate-specific delayed discounting task".Appetite 105(2016):477-486.
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