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Reward systems in the brain and nutrition
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Rolls, Edmund T. (2016) Reward systems in the brain and nutrition. Annual Review of Nutrition, 36 (1). pp. 435-470. doi:10.1146/annurev-nutr-071715-050725 ISSN 0199-9885.
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Official URL: http://dx.doi.org/10.1146/annurev-nutr-071715-0507...
Abstract
The taste cortex in the anterior insula provides separate and combined representations of the taste, temperature, and texture of food in the mouth independently of hunger and thus of reward value and pleasantness. One synapse on, in the orbitofrontal cortex, these sensory inputs are combined by associative learning with olfactory and visual inputs for some neurons, and these neurons encode food reward value in that they respond to food only when hunger is present and in that activations correlate linearly with subjective pleasantness. Cognitive factors, including word-level descriptions and selective attention to affective value, modulate the representation of the reward value of taste, olfactory, and flavor stimuli in the orbitofrontal cortex and a region to which it projects, the anterior cingulate cortex. These food reward representations are important in the control of appetite and food intake. Individual differences in reward representations may contribute to obesity, and there are age-related differences in these reward representations. Implications of how reward systems in the brain operate for understanding, preventing, and treating obesity are described.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | ||||||||
Journal or Publication Title: | Annual Review of Nutrition | ||||||||
Publisher: | Annual Reviews | ||||||||
ISSN: | 0199-9885 | ||||||||
Official Date: | July 2016 | ||||||||
Dates: |
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Volume: | 36 | ||||||||
Number: | 1 | ||||||||
Page Range: | pp. 435-470 | ||||||||
DOI: | 10.1146/annurev-nutr-071715-050725 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 1 August 2016 |
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