Impulse control disorders in Parkinson's disease are associated with dysfunction in stimulus valuation but not action valuation.

@article{Piray2014ImpulseCD,
  title={Impulse control disorders in Parkinson's disease are associated with dysfunction in stimulus valuation but not action valuation.},
  author={Payam Piray and Yashar Zeighami and Fariba Bahrami and Abeer Mohamed Eissa and Doaa H. Hewedi and Ahmed A. Moustafa},
  journal={The Journal of neuroscience : the official journal of the Society for Neuroscience},
  year={2014},
  volume={34 23},
  pages={
          7814-24
        }
}
A substantial subset of Parkinson's disease (PD) patients suffers from impulse control disorders (ICDs), which are side effects of dopaminergic medication. Dopamine plays a key role in reinforcement learning processes. One class of reinforcement learning models, known as the actor-critic model, suggests that two components are involved in these reinforcement learning processes: a critic, which estimates values of stimuli and calculates prediction errors, and an actor, which estimates values of… CONTINUE READING
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