University of Michigan, USA
Wednesday 24 May 2006, 16:00
Seminar Room B10 (Basement)
Alexandra House, 17 Queen Square, London, WC1N 3AR
Dopamine in reward: Prediction error learning or incentive salience 'wanting'?
What is the role of dopamine in reward? Dopamine activation obeys prediction error models, but I will review some recent evidence indicating dopamine is not a necessary cause nor sufficient cause for reward learning of any type. Dopamine may be a consequence rather than a cause of reward learning. I'll suggest that dopamine systems take learning as an input, but dopamine's own causal contribution lies in 'wanting' functions (motivational incentive salience or decision utility) rather than learning (prediction error or predicted utility ) or reward liking functions (hedonic impact or experienced utility).