Exp Brain Res. 1991;84(3):672-5.

Tonically discharging neurons of monkey striatum respond to preparatory and rewarding stimuli.

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Institut de Physiologie, Université de Fribourg, Switzerland.

Abstract

The behavioral relationships of 396 striatum neurons with regular, tonically elevated discharge rates were studied. While monkeys performed a delayed gonogo task, neurons predominantly located in medial putamen responded with phasic depressions (n = 30) or activations (n = 5) to task-specific stimuli. Particularly effective was an instruction light preparing for movement or no-movement reactions, and an auditory signal associated with reward delivery. Stimuli triggering arm or mouth movements were less effective. The data demonstrate that these usually poorly modulated neurons display context-dependent phasic activity in specific behavioral situations.

PMID:: 1864338; [PubMed - indexed for MEDLINE]

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