Dopamine neurons encode errors in predicting movement trigger 1 occurrence
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Dopamine neurons encode errors in predicting movement trigger occurrence.
The capacity to anticipate the timing of events in a dynamic environment allows us to optimize the processes necessary for perceiving, attending to, and responding to them. Such anticipation requires neuronal mechanisms that track the passage of time and use this representation, combined with prior experience, to estimate the likelihood that an event will occur (i.e., the event's "hazard rate")...
متن کاملResponses of monkey dopamine neurons to reward and conditioned stimuli during successive steps of learning a delayed response task.
The present investigation had two aims: (1) to study responses of dopamine neurons to stimuli with attentional and motivational significance during several steps of learning a behavioral task, and (2) to study the activity of dopamine neurons during the performance of cognitive tasks known to be impaired after lesions of these neurons. Monkeys that had previously learned a simple reaction time ...
متن کاملDopamine Neurons, Input Integration, and Reward Prediction Errors: E Pluribus Unum
Dopamine neurons encode errors in reward prediction, yet understanding how they integrate information from different subcortical inputs to generate these signals has remained elusive. In this issue of Neuron, Tian et al. (2016) shed new light onto these underlying mechanisms.
متن کاملTime, Not Size, Matters for Striatal Reward Predictions to Dopamine
Midbrain dopamine neurons encode reward prediction errors. In this issue of Neuron, Takahashi et al. (2016) show that the ventral striatum provides dopamine neurons with prediction information specific to the timing, but not the quantity, of reward, suggesting a surprisingly nuanced neural implementation of reward prediction errors.
متن کاملDuration of inhibition of ventral tegmental area dopamine neurons encodes a level of conditioned fear.
It is widely accepted that midbrain dopamine (DA) neurons encode actual and expected reward values by phasic alterations in firing rate. However, how DA neurons encode negative events in the environment is still unclear because some DA neurons appear to be depressed and others excited by aversive stimuli. Here, we show that exposing fear-conditioned rats to stimuli predicting electrical shock e...
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تاریخ انتشار 2014