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. 1991;84(3):672-5.
doi: 10.1007/BF00230981.

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

P Apicella  1 , E Scarnati, W Schultz
Affiliations

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

P Apicella et al. Exp Brain Res. 1991.

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.

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