Effects of exposure to food images on physiological reactivity and emotional responses in women with bulimia nervosa
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2013
- handle: 10670/1.cyeq3f
- 0214-9915
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Psicothema
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Food habits Foraging behavior Foods Feeding behavior FoodsCiter ce document
José Ramón Yela Bernabé et al., « Effects of exposure to food images on physiological reactivity and emotional responses in women with bulimia nervosa », Psicothema, ID : 10670/1.cyeq3f
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"Background: The aim of this study is to compare the effectiveness of two exposure procedures on habituation of emotional responses to food stimuli: (a) exposure to external cues (food images) without eating forbidden food (CE) and (b) exposure to external cues eating forbidden food (with purge prevention). The infl uence of craving-trait and mood state on the habituation process is also studied. Method: Emotional modulation of the defense startle refl ex was assessed in 26 women at risk of bulimia nervosa. After four exposure trials, changes in the following variables were measured: (a) food craving-state; (b) physiological measures: hearth rate (HR) and skin conductance response (SCR); (c) motivational patterns towards food (defense startle response); and (d) valence, arousal and dominance of the emotional response to food images. Results: After treatment, subjects tended to show non-signifi cant lower SCR and heart orientation responses (vs. defense responses); defense startle response was also signifi cantly lower. Conclusions: The exposure procedure, the induced emotional state and the number of exposure trials are analyzed."