Now, using a novel system developed at Janelia, researchers led by the Dudman Lab found that a part of the basal ganglia called the striatum is not involved in action selection as previously thought.

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The basal ganglia are a set of subcortical structures ... Its input structure, the striatum, receives a dense dopaminergic input that is critical for reinforcement learning and whose dysfunction ...

This is where the basal ganglia—specifically the striatum—comes into play. This part of the brain is responsible for forming habits, linking what we see and feel with what we do. This is why ...

A large number of computational models of information processing in the basal ganglia have been developed in recent years. Prominent in these are actor-critic models of basal ganglia functioning which ...