Caudate Encodes Multiple Computations for Perceptual Decisions

Overview

Journal J Neurosci

Specialty Neurology

Date 2010 Nov 26

PMID 21106814

Citations 173

Authors

Long Ding

Joshua I Gold

Affiliations

Soon will be listed here.

Abstract

Perceptual decision making is a complex process that requires multiple computations, including the accumulation of sensory evidence and an ongoing evaluation of the accumulation process to use for prediction and adjustment. Implementing these computations likely involves interactions among many brain regions. For perceptual decisions linked to oculomotor actions, neural correlates of sensory evidence accumulation have been identified in several cortical areas, including the frontal eye field and lateral intraparietal area, and one of their direct, subcortical targets, the superior colliculus. These structures are also connected indirectly, via the basal ganglia. The basal ganglia pathway has been theorized to contribute to perceptual decision making, but the nature of this contribution has yet to be examined directly. Here we show that in monkeys performing a reaction-time visual motion direction-discrimination task, neurons in a primary input structure of the basal ganglia, the caudate nucleus, encode three aspects of decision making: evidence accumulation, evaluation, and choice biases. These results indicate that the basal ganglia pathway can provide important signals to influence and assess perceptual decisions that guide oculomotor behavior.

Citing Articles

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