Neurostimulation Reveals Context-Dependent Arbitration Between Model-Based and Model-Free Reinforcement Learning.

Neurostimulation Reveals Context-Dependent Arbitration Between Model-Based and Model-Free Reinforcement Learning.
Related ArticlesNeurostimulation Reveals Context-Dependent Arbitration Between Model-Based and Model-Free Reinforcement Learning. Cereb Cortex. 2019 Mar 19;: Authors: Weissengruber S, Lee SW, O'Doherty JP, Ruff CC Abstract While it is established that humans use model-based (MB) and model-free (MF) reinforcement learning in a complementary fashion, much less is known about how the brain determines which of these systems should control behavior at any given moment. Here we provide causal evidence for a neural mechanism that acts as a context-dependent arbitrator between both systems. We applied excitatory and inhibitory transcranial direct current stimulation over a region of the left ventrolateral prefrontal cortex ... read more
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