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The development and maintenance of night eating syndrome (NES) is likely influenced by physiological, psychological, and social factors. Within the physiological domain, neural mechanisms (e.g., neurotransmitters and specific brain region functioning) remain understudied in contrast to other eating disorders and obesity. The serotonin system has been hypothesized to contribute to NES based on one single photon emission computed tomography (SPECT) study and supportive pharmacologic treatment outcome findings, but additional neural models are plausible. Functional magnetic resonance imaging (fMRI) is a brain imaging tool that is increasingly being used to study obesity, eating behavior, and sleep. Converging data from these literatures using food motivation and decision making fMRI paradigms suggest that the prefrontal and limbic brain systems might also play a role in the development and/or maintenance of NES. We use these data to support a new neural model of NES for future testing and validation. |
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