title: Ultradian barpressing for rewarding brain stimulation in rhesus monkeys.
mesh_terms: D000818:Animals; D000882:Haplorhini; D007031:Hypothalamus / Q000502:physiology*; D008125:Locus Coeruleus / Q000502:physiology*; D008253:Macaca mulatta; D008297:Male; D009043:Motor Activity / Q000502:physiology; D010507:Periodicity; D012201:Reward; D012653:Self Stimulation / Q000502:physiology*; D012931:Social Environment