Visual hallucinations in Parkinson’s disease—imbalances in top-down vs. bottom up information processing
Perception can be considered a process of inference where bottom-up sensory information is integrated with previously learnt information about the world. Imbalances in this process can contribute to the development of hallucinations. My talk will cover work in Parkinson’s disease visual hallucinations, where we have used a variety of methodologies (i.e., cognitive tasks, MRI, and computational modelling) to explore sensory evidence accumulation processes and top-down influences over vision related to the default network. These studies will be discussed with reference to the evolution of visual hallucinations in Parkinson’s disease and the potential role for a predictive processing account.
Date:
11 December 2018, 13:00
Venue:
Biology South Parks Road, South Parks Road OX1 3RB
Venue Details:
Schlich Lecture Theatre
Speaker:
Dr Claire O'Callaghan (University of Cambridge)
Organising department:
Department of Experimental Psychology
Organiser contact email address:
miriam.klein-flugge@psy.ox.ac.uk
Host:
Dr Michele Veldsman (University of Oxford)
Part of:
Department of Experimental Psychology - Cognitive & Behavioural Neuroscience Seminar series (BEACON)
Booking required?:
Not required
Audience:
Members of the University only
Editors:
Janice Young,
Laura Freeth
