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Physiology & behavior · Feb 2006
Clinical TrialRestrained eaters show altered brain response to food odor.
- Nobuko Kemmotsu and Claire Murphy.
- Department of Psychology, San Diego State University, San Diego, CA, USA. kemmotsu@rohan.sdsu.edu
- Physiol. Behav. 2006 Feb 28;87(2):323-9.
AbstractDo restrained and unrestrained eaters differ in their brain response to food odor? We addressed this question by examining restrained eaters' brain response to food (chocolate) and non-food (geraniol, floral) odors, both when odor was attended to and when ignored. Using olfactory event-related potentials (OERPs), we found that restrained eaters and controls responded similarly to the non-food odor; however, unlike controls, restrained eaters showed no increase in brain response to the food odor when they focused attention on it. Rather, restrained eaters showed attenuated OERP amplitudes to the food odor in both attended and ignored conditions, suggesting that the brain's response to attended food odor was abnormally suppressed.
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