Operant control of precentral neurons: the role of audio and visual feedback.
D000818:Animals; D002540:Cerebral Cortex / Q000502:physiology*; D003216:Conditioning, Operant / Q000502:physiology*; D005071:Evoked Potentials; D005246:Feedback; D008253:Macaca mulatta; D009474:Neurons / Q000502:physiology