期刊
BIOLOGICAL PSYCHOLOGY
卷 94, 期 3, 页码 575-581出版社
ELSEVIER
DOI: 10.1016/j.biopsycho.2013.10.004
关键词
Anorexia nervosa; Eating disorders; Eye tracking; Hyperactivity; Physical activity; Reward
资金
- Center of Nutritional Medicine Tubingen/Hohenheim [ZEM 24.A II-08]
Hyperactivity is a potential neurobiological marker and a core psychopathological trait in anorexia nervosa (AN). We investigated the processing of hyperactivity-related information in fifteen AN patients, 15 athletes and 15 non-athletes to examine if they represent disorder-related reward information using eye tracking. We assessed the extent of individually performed physical activity, mood, trait reward sensitivity and serum leptin levels. Results revealed a pronounced bias in overall attentional engagement toward stimuli associated with physical activity in patients and athletes as compared to non-athletes. In patients, relevant correlations were found: trait reward sensitivity and attentional orienting were strongly correlated and amount of physical activity correlated with attentional orienting and engagement. Compared to non-athletes, patients and athletes rated exercise stimuli as more pleasant. Findings suggest that exercise-related stimuli are perceived as rewarding by AN patients. Positive motivational valence of physical activity might contribute to disorder development and maintenance. (C) 2013 Elsevier B.V. All rights reserved.
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