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Brain Res. 2010 Sep 2;1350:43-64. doi: 10.1016/j.brainres.2010.04.003. Epub 2010 Apr 11.

The tempted brain eats: pleasure and desire circuits in obesity and eating disorders.

Author information

  • 1Department of Psychology, University of Michigan, Ann Arbor, MI, USA. berridge@umich.edu

Abstract

What we eat, when and how much, all are influenced by brain reward mechanisms that generate "liking" and "wanting" for foods. As a corollary, dysfunction in reward circuits might contribute to the recent rise of obesity and eating disorders. Here we assess brain mechanisms known to generate "liking" and "wanting" for foods and evaluate their interaction with regulatory mechanisms of hunger and satiety, relevant to clinical issues. "Liking" mechanisms include hedonic circuits that connect together cubic-millimeter hotspots in forebrain limbic structures such as nucleus accumbens and ventral pallidum (where opioid/endocannabinoid/orexin signals can amplify sensory pleasure). "Wanting" mechanisms include larger opioid networks in nucleus accumbens, striatum, and amygdala that extend beyond the hedonic hotspots, as well as mesolimbic dopamine systems, and corticolimbic glutamate signals that interact with those systems. We focus on ways in which these brain reward circuits might participate in obesity or in eating disorders.

2010 Elsevier B.V. All rights reserved.

PMID:
20388498
[PubMed - indexed for MEDLINE]
PMCID:
PMC2913163
Free PMC Article

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