Transient activation of midbrain dopamine neurons by reward risk

  title={Transient activation of midbrain dopamine neurons by reward risk},
  author={Christopher D. Fiorillo},
Dopamine neurons of the ventral midbrain are activated transiently following stimuli that predict future reward. This response has been shown to signal the expected value of future reward, and there is strong evidence that it drives positive reinforcement of stimuli and actions associated with reward in accord with reinforcement learning models. Behavior is also influenced by reward uncertainty, or risk, but it is not known whether the transient response of dopamine neurons is sensitive to… CONTINUE READING

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