Inhibitory Control and Eating Disorders
Condition: Anorexia Nervosa; Bulimia Nervosa; Binge Eating
MeSH terms: Anorexia; Bulimia; Feeding and Eating Disorders; Anorexia Nervosa; Binge-Eating Disorder; Bulimia Nervosa
Study type: Observational

Summary: 
      Executive functions are part of the high-level cognitive processes essential to the proper
      functioning of human cognition. They consist mainly of flexibility, updating and inhibition.
      Some studies have shown a correlation between executive disorders (impaired executive
      function) and psychiatric disorders such as obsessive-compulsive disorder or phobias. These
      executive disorders are related to dysfunctions of the fronto-striatal loops.

      In addition, other studies have investigated the link that may exist between eating disorders
      such as anorexia or bulimia nervosa and executive functioning. Anorexia nervosa, bulimia
      nervosa and binge eating disorders are eating disorders characterized by a dysfunction in
      food intake with restriction of food or compulsions as well as strong concerns about the body
      schema. Concerning the executive functioning, these studies highlight a lack of cognitive
      flexibility for patients with anorexia nervosa and bulimia nervosa but also dysfunctions
      depending on the type of pathology (anorexia nervosa or bulimia nervosa). These studies also
      highlight the beneficial effects of cognitive remediation on people with eating disorders.

      However, the investigation of the inhibitory control has not yet been specifically studied.
      Moreover, since eating disorders are structurally different, a comparison between several
      pathologies would be interesting to consider.

      The aim of this study is to determine if a dysfunction of inhibitory control can be
      highlighted in people with eating disorders. This study would also allow further researches
      about cognitive remediation suitable for the specific difficulties encountered in these
      diseases.
    


Intervention name(s): Neuropsychological assessment : Stroop task; Neuropsychological assessment : Go No Go task
Intervention type(s): Other; Other
Intervention description(s): Stroop task is an interference task assessing cognitive inhibitory control. This "paper-and-pencil" task aims to evaluate the inhibition of an automated process such as reading by asking participants to name the color of color names written in a different color ink.
This test is non-invasive.; Go No Go task assessing motor inhibitory control. This computer-based task is designed to evaluate motor inhibition by asking participants to respond to a stimulus as quickly as possible by inhibiting another distractor stimulus.
This test is non-invasive.
Observational model: Other
Time perspective: Prospective
Sampling method: Non-Probability Sample
Study population: 
        Women aged 19 to 40 years old, with a BMI between 13 and 40 kg/m2, outpatients of the
        Refering Center of Eating Disorders ('Hospices Civils de Lyon' in Lyon), with an eating
        disorder diagnosis (Anorexia Nervosa, Bulimia Nervosa or Binge Eating Disorder).