Expected value, reward outcome, and temporal difference error representations in a probabilistic decision task.

@article{Rolls2008ExpectedVR,
  title={Expected value, reward outcome, and temporal difference error representations in a probabilistic decision task.},
  author={Edmund T. Rolls and Ciara McCabe and J{\'e}r{\^o}me Redout{\'e}},
  journal={Cerebral cortex},
  year={2008},
  volume={18 3},
  pages={652-63}
}
In probabilistic decision tasks, an expected value (EV) of a choice is calculated, and after the choice has been made, this can be updated based on a temporal difference (TD) prediction error between the EV and the reward magnitude (RM) obtained. The EV is measured as the probability of obtaining a reward x RM. To understand the contribution of different brain areas to these decision-making processes, functional magnetic resonance imaging activations related to EV versus RM (or outcome) were… CONTINUE READING
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Abstract reward and punishment representations in the human orbitofrontal cortex

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