believer-skeptic meets actor-critic: rethinking the role of basal ganglia pathways during decision-making and reinforcement learning

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ID: 152872
2016
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Abstract
The flexibility of behavioral control is a testament to the brain’s capacity for dynamically resolving uncertainty during goal-directed actions. This ability to select actions and learn from immediate feedback is driven by the dynamics of basal ganglia (BG) pathways. A growing body of empirical evidence conflicts with the traditional view that these pathways act as independent levers for facilitating (i.e., direct pathway) or suppressing (i.e., indirect pathway) motor output, suggesting instead that they engage in a dynamic competition during action decisions that computationally captures action uncertainty. Here we discuss the utility of encoding action uncertainty as a dynamic competition between opposing control pathways and provide evidence that this simple mechanism may have powerful implications for bridging neurocomputational theories of decision making and reinforcement learning.
Reference Key
edunovan2016frontiersbeliever-skeptic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Kyle eDunovan;Kyle eDunovan;Timothy eVerstynen;Timothy eVerstynen
Journal Journal of enzyme inhibition and medicinal chemistry
Year 2016
DOI
10.3389/fnins.2016.00106
URL
http://journal.frontiersin.org/Journal/10.3389/fnins.2016.00106/full
Keywords
decision making reinforcement learning basal ganglia computational modeling neuropsychiatry biological psychiatry exploration-exploitationneurosciences

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