title: Importance of catecholamine release by nerve impulses for free operant behavior.
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism; D003216:Conditioning, Operant / Q000187:drug effects*; D003864:Depression, Chemical; D004295:Dihydroxyphenylalanine / Q000494:pharmacology*; D004298:Dopamine / Q000378:metabolism*; D005470:Fluorometry; D008781:Methyltyrosines / Q000037:antagonists & inhibitors / Q000494:pharmacology; D009638:Norepinephrine / Q000378:metabolism*; D051381:Rats; D009435:Synaptic Transmission; D013747:Tetrabenazine / Q000494:pharmacology; D013997:Time Factors
chemical_list: D008781:Methyltyrosines; D004295:Dihydroxyphenylalanine; D004298:Dopamine; D009638:Norepinephrine; D013747:Tetrabenazine