title: Regional changes in brain catecholamine turnover in the rat during performance on fixed ratio and variable interval schedules of reinforcement.
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism*; D003216:Conditioning, Operant / Q000502:physiology*; D004298:Dopamine / Q000378:metabolism*; D008297:Male; D009474:Neurons / Q000378:metabolism; D009638:Norepinephrine / Q000378:metabolism*; D051381:Rats; D012055:Reinforcement Schedule
chemical_list: D004298:Dopamine; D009638:Norepinephrine