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  • Title: Tonically discharging neurons of monkey striatum respond to preparatory and rewarding stimuli.
    Author: Apicella P, Scarnati E, Schultz W.
    Journal: Exp Brain Res; 1991; 84(3):672-5. PubMed ID: 1864338.
    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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