Project Augmentative effects of tDCS on a body-related attentional retraining in women with bulimia nervosa

Basic data

Title:
Augmentative effects of tDCS on a body-related attentional retraining in women with bulimia nervosa
Duration:
01/10/2016 to 30/09/2019
Abstract / short description:
Overvaluation of shape and weight on self-esteem and corresponding body dissatisfaction are a core diagnostic feature of both bulimia nervosa (BN) and subthreshold BN (Other Specified Feeding or Eating Disorder [OSFED]). Cognitive models of eating disorders suggest that salient stimuli such as the exposure with the self-body or the comparison with another body activate selective memory, interpretation and attentional processes, assumed to substantially contribute to behavior typically associated with eating disorders such as body checking, body avoidance and pathological eating behavior. In accordance, eye movement studies showed that women with a (sub)clinical eating disorder preferentially process body parts typically associated with weight change or body parts which they subjectively dislike (compared to like).
Of note, experimental evidence suggests a causal link between the selective attentional bias for body parts and body dissatisfaction, in that a retraining of attention towards self-defined unattractive body parts reduces, while a retraining of attention towards attractive body parts increases body satisfaction in body dissatisfied women. However the latter was shown to be more difficult, needing a more extensive retraining.
Recent evidence suggests that the cortical stimulation of the dorsolateral prefrontal cortex (dlPFC) by transcranial direct current stimulation (tDCS) can ameliorate attentional biases and increase the effects of attentional retraining. Therefore, the aim of the present project is to investigate whether a positive body-related attentional retraining reduces selective attention for unattractive body parts and increases body satisfaction in a group of women with BN, as well as subthreshold BN (OSFED), and whether these effects can be enhanced by tDCS.
Keywords:
bulimia nervosa
body image disturbance
attention bias
modification training
tDCS
transcranial direct current stimulation, transkranielle Gleichstromstimulation

Staff

Managers

Faculty of Science
University of Tübingen
Institute of Psychology
Department of Psychology, Faculty of Science

Contact persons

Department of Psychiatry and Psychotherapy
Hospitals and clinical institutes, Faculty of Medicine
Department of Psychiatry and Psychotherapy
Hospitals and clinical institutes, Faculty of Medicine

Local organizational units

Department of Psychology
Faculty of Science
University of Tübingen

Funders

Bonn, Nordrhein-Westfalen, Germany
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