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Eating Disorders - Coggle Diagram

- - - - Integrated sense of the physiological condition, coordinated by the insula which has long been recognised as in impaired in the AN
    - - The recognition of our own emotion (Alexithymia; find it difficult to distinguish between emotional states) and the recognition of others emotion (Theory of mind). In AN there is averagely a lower ability to recognise their own emotions and others.
    - - How do they respond to different types of reward, a typical tendency we have is to have a reward now (delay discounting). In AN most will have the tendency to have it later- they are more focused on the future.
      - Sensitivity to punishment: a certain amount of harm avoidance is good as you need it to keep you alive. In AN there is an enhanced tendency to what is perceived as harmful situations.
    - - Looking at how easy someone find its to set shift (switch between tasks). Women with AN are not very good at set shifting, BUT also is present in unaffected sister so could be a shared trait
      - Wisconsin card sorting test: how easy are people able to switch, the more errors, the more difficult to switch and the more rigid someone's cognitive ability is
- - - - Genetic correlations with alcohol dependence
      - Heritability for BED between 41 to 57%
      - Heritability for BN BETWEEN 50-80%
  - - - Impulsive behaviours are behaviours that are poorly conceived, prematurely expressed, unduly risky or inappropriate. Those acting in an impulsive way might have a reduced ability to inhibit certain impulses, or it could be driven by a heightened reward response
      - In BN/BED: lower inhibitory control but also have higher response/sensitivity to rewards
      - Delay discounting: prefer immediate versus delayed reward
    - - Binge eating tend to show higher negative affects- a worse mood overall. But negative emotions seems to precede the binge eating disorder, perhaps acting as a trigger for binge eating.
    - - Suggest there is a disturbance in the experience of the body in BN/BED. In heart beat detection accuracy Bulimia women were poorer at being aware of their own body and heartbeat