Effects of exposure to food images on physiological reactivity and emotional responses in women with bulimia nervosa

  1. Yela Bernabé, Jose Ramón 1
  2. Gómez Martínez, María Angeles 1
  3. Cortés Rodríguez, María 1
  4. Salgado Ruiz, Alfonso 1
  1. 1 Universidad Pontificia de Salamanca
    info

    Universidad Pontificia de Salamanca

    Salamanca, España

    ROR https://ror.org/02jj93564

Journal:
Psicothema

ISSN: 0214-9915

Year of publication: 2013

Volume: 25

Issue: 2

Pages: 185-191

Type: Article

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Abstract

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 influence of craving-trait and mood state on the habituation process is also studied. Method: Emotional modulation of the defense startle reflex 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-significant lower SCR and heart orientation responses (vs. defense responses); defense startle response was also significantly lower. Conclusions: The exposure procedure, the induced emotional state and the number of exposure trials are analyzed.

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