Life as we know it
- š¤ Speaker: Karl Friston (Institute of Neurology, University College London)
- š Date & Time: Thursday 08 May 2014, 15:30 - 16:30
- š Venue: Lecture Theatre, MRC Cognition and Brain Sciences Unit, Chaucer Road
Abstract
How much about our interaction with ā and experience of ā our world can be deduced from basic principles? This talk reviews recent attempts to understand the self-organised behaviour of embodied agents ā like ourselves ā as satisfying basic imperatives for sustained exchanges with our world. In brief, one simple driving force appears to explain nearly every aspect of our behaviour and experience. This driving force is the minimisation of surprise or prediction error. InĀ the context of perception, this corresponds to (Bayes-optimal) predictive coding that suppresses exteroceptive prediction errors.Ā InĀ the context of action, simple reflexesĀ can be seen as suppressing proprioceptive prediction errors. We will look at some of the phenomena that emerge from thisĀ formulation, such as hierarchical message passing in the brain and the perceptual inference that ensues. I hope to illustrateĀ these points usingĀ simple simulations of how life-like behaviour emerges almost inevitably from coupled dynamical systems ā and how this behaviour can be understood in terms of perception, action and action observation.
Series This talk is part of the Chaucer Club series.
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Karl Friston (Institute of Neurology, University College London)
Thursday 08 May 2014, 15:30-16:30