Midbrain Dopamine Neurons Signal Belief in Choice Accuracy during a Perceptual Decision
TLDR
D dopamine responses emerged prior to monkeys' choice initiation, raising the possibility that dopamine impacts impending decisions, in addition to encoding a post-decision teaching signal, and it is shown that dopamine responses convey teaching signals that are also appropriate for perceptual decisions.About:
This article is published in Current Biology.The article was published on 2017-03-20 and is currently open access. It has received 134 citations till now. The article focuses on the topics: Temporal difference learning.read more
Citations
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Specialized coding of sensory, motor and cognitive variables in VTA dopamine neurons
Ben Engelhard,Joel Finkelstein,Julia Cox,Weston Fleming,Hee Jae Jang,Sharon Ornelas,Sue Ann Koay,Stephan Y. Thiberge,Nathaniel D. Daw,David W. Tank,Ilana B. Witten +10 more
TL;DR: Two-photon calcium imaging of a large population of dopamine neurons in the ventral tegmental area of mice performing a virtual-reality navigation task reveals the organization principles of the dopamine system.
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Dopamine Neurons Respond to Errors in the Prediction of Sensory Features of Expected Rewards.
Yuji K. Takahashi,Hannah M Batchelor,Bing Liu,Akash Khanna,Marisela Morales,Geoffrey Schoenbaum,Geoffrey Schoenbaum,Geoffrey Schoenbaum +7 more
TL;DR: It is shown that classic error-signaling dopamine neurons also respond to changes in value-neutral sensory features of an expected reward, suggesting that dopamine neurons have access to a wider variety of information than contemplated by the models currently used to interpret their activity.
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Distinct encoding of decision confidence in human medial prefrontal cortex
Dan Bang,Stephen M. Fleming +1 more
TL;DR: A psychophysical task to decouple confidence in a perceptual decision from both the reliability of sensory evidence and the relation of such evidence with respect to a choice boundary is devised and is consistent with the proposal that the brain maintains choice-dependent and choice-independent estimates of certainty.
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Believing in dopamine
TL;DR: Dopamine signals are implicated in not only reporting reward prediction errors but also various probabilistic computations, and it is proposed that these different roles for dopamine can be placed within a common reinforcement learning framework.
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Model-based predictions for dopamine.
TL;DR: A number of recent findings highlight the influence of model-based computations on dopamine responses, and suggest that dopamine prediction errors reflect more dimensions of an expected outcome than scalar reward value.
References
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Reinforcement Learning: An Introduction
TL;DR: This book provides a clear and simple account of the key ideas and algorithms of reinforcement learning, which ranges from the history of the field's intellectual foundations to the most recent developments and applications.
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A Neural Substrate of Prediction and Reward
TL;DR: Findings in this work indicate that dopaminergic neurons in the primate whose fluctuating output apparently signals changes or errors in the predictions of future salient and rewarding events can be understood through quantitative theories of adaptive optimizing control.
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Predictive Reward Signal of Dopamine Neurons
TL;DR: Dopamine systems may have two functions, the phasic transmission of reward information and the tonic enabling of postsynaptic neurons.
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A framework for mesencephalic dopamine systems based on predictive Hebbian learning
TL;DR: A theoretical framework is developed that shows how mesencephalic dopamine systems could distribute to their targets a signal that represents information about future expectations and shows that, through a simple influence on synaptic plasticity, fluctuations in dopamine release can act to change the predictions in an appropriate manner.
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Dopamine in Motivational Control: Rewarding, Aversive, and Alerting
TL;DR: It is proposed that dopamine neurons come in multiple types that are connected with distinct brain networks and have distinct roles in motivational control, and it is hypothesized that these dopaminergic pathways for value, salience, and alerting cooperate to support adaptive behavior.