Probabilistic classification and the basal ganglia

A supervised learning task with a probabilistic relationship between cues and correct response was shown to be impaired in Parkinson’s patients, but not in hippocampal amnesiacs.

This shows a double dissociation between declarative memory and probabilistic classification (i.e. there are two separate learning systems), and shows that the basal ganglia are somehow involved in probabalistic classification.

See NeuroWiki:ProbabilisticClassificationLearning for details and links.

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