Reaching-related potentials in caudate nucleus and cerebellum of rats.
Electrical correlates of the lateralized reaching reaction was studied in rats with implanted electrodes. Averaged event-related potentials (ERPs) in the cerebellar dentate nucleus consisted of a negative wave coinciding with reach onset and followed 70 msec later by a positive deflection. The most prominent component of the more variable caudate ERPs was a negative wave culminating 60--120 msec after reach onset. The positive and negative ERP deflections corresponded to inhibitory and excitatory reactions respectively, at the single neuron level.
D000200:Action Potentials; D000818:Animals; D002421:Caudate Nucleus / Q000502:physiology*; D002531:Cerebellum / Q000502:physiology*; D005552:Forelimb / Q000502:physiology; D008297:Male; D009044:Motor Cortex / Q000502:physiology; D009068:Movement; D009474:Neurons / Q000502:physiology; D051381:Rats