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SUMMARY:Computational models of compulsivity - State learning and control 
 in OCD and gambling disorder - Dr Frederike Petzschner\, Brown University
DTSTART:20211104T123000Z
DTEND:20211104T133000Z
UID:TALK160921@talks.cam.ac.uk
CONTACT:87079
DESCRIPTION:*Abstract*\nWhile OCD and gambling are often conceptualized a
 s disorders of compulsivity arising from dysfunctional beliefs\, the na
 ture of the beliefs leading to symptom manifestation remains unclear. C
 omputational modelling can help disentangle the complex interplay between
  beliefs and symptoms\, identify core components\, and suggest targets for
  novel treatment approaches. This talk covers three lines of work that c
 entred around a computational informed understanding of the origins o
 f compulsive behaviour: The first part relates individual structure learn
 ing differences to obsessive-compulsive traits and SSRIs - the first-line 
 pharmacological treatment of OCD. The second part delves deeper into the
  origin of compulsive behaviour. While there are a number of theoretic
 al explanatory frameworks mostly centred around belief alterations\, there
  is no clear consensus on what beliefs are necessary or sufficient to caus
 e compulsive behaviour. We used a minimal model approach (based on a POMDP
 ) to address this question and pinpoint the belief about the success of 
 preventive actions as being centrally important for eliciting and maintain
 ing compulsive behaviour. Finally\, the third part of the talk highlight
 s that similar beliefs about the efficacy of one's actions may not only b
 e associated with compulsive behaviour in OCD but may also play an essenti
 al role in the compulsive aspect of pathological gambling.\n\n*Biography
 *\nFrederike Petzschner is an Assistant Professor for Psychiatry and Human
  Behaviour at the Department of Psychiatry at Brown University. In her res
 earch\, she combines mechanistic computational models with measurements of
  human behavior and brain function in health and disease. One line of her 
 research focuses on modelling learning and decision-making in the healthy 
 population and patients suffering from Obsessive-Compulsive Disorder and G
 ambling Addiction. Another line of research focuses on Interoception. Stud
 ying how the brain processes and regulates internal bodily states and how 
 aberrations in this process can result in dyshomeostasis\, Psychosomatic s
 ymptoms and Chronic Pain. For more information about Dr Petzschner\, pleas
 e visit: https://fpetzschner.com/\n
LOCATION: Webinar  (via Zoom online)
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