This study examines the influence of acute fasting and eating on self-control in adult females with and without bulimia nervosa (BN). Specifically, the study team is investigating whether differences in behavior and brain activation in response to computer tasks after fasting and after eating a meal could help to explain the symptoms of bulimia nervosa. Data will be collected using questionnaires and a technology called magnetic resonance imaging (MRI).
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Brain Activation Associated With P(Stop)
Timeframe: after 16 hours of fasting and at 30 minutes after a standardized meal (as least 24 hours apart, but not more than 7 days apart)
Brain Activation Associated With Prediction Errors (Unsigned)
Timeframe: after 16 hours of fasting and at 30 minutes after a standardized meal (as least 24 hours apart, but not more than 7 days apart)
Brain Activation Associated With Prediction Errors (Signed)
Timeframe: after 16 hours of fasting and at 30 minutes after a standardized meal (as least 24 hours apart, but not more than 7 days apart)
Brain Activation Associated With Successful Inhibition
Timeframe: after 16 hours of fasting and at 30 minutes after a standardized meal (as least 24 hours apart, but not more than 7 days apart)