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- W2000644521 abstract "Are obese subjects characterized by a reduction of attentional cortical responses to the enlargement of food or body images?Electroencephalographic data were recorded in 19 obese and 15 normal-weight adults during an oddball paradigm. The subjects were given frequent (70%) and rare (30%) stimuli depicting faces (FACE), food (FOOD), and landscapes (CONTROL), and clicked the mouse after the rare stimuli. These stimuli depicted the same frequent stimuli graphically dilated by 25% along the horizontal axis. Bioelectrical impedance indexed subjects' body fat percentage. Cortical attentional responses were probed by the difference between positive event-related potentials peaking around 400-500ms post-stimulus for the rare minus frequent stimuli (P300). Low resolution electromagnetic source tomography (LORETA) estimated P300 sources.In the FOOD condition, the amplitude of medial prefrontal P300 sources (Brodmann area 9) was lower in the obese than normal-weight subjects, and there was a negative correlation between the body fat percentage and the amplitude of these sources in all subjects as a single group.These results disclose that prefrontal attentional processes to food size are abnormal in obese subjects.The present study motivates future research evaluating the effects of cognitive rehabilitation in obese subjects." @default.
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- W2000644521 date "2009-08-01" @default.
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- W2000644521 title "Frontal attentional responses to food size are abnormal in obese subjects: An electroencephalographic study" @default.
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- W2000644521 doi "https://doi.org/10.1016/j.clinph.2009.06.012" @default.
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