title: Studies on the central nervous system actions of papaverine. I. The action on sleep cycle in the rat.
mesh_terms: D000818:Animals; D002490:Central Nervous System / Q000187:drug effects*; D008297:Male; D010208:Papaverine / Q000494:pharmacology*; D051381:Rats; D012890:Sleep / Q000187:drug effects*; D012894:Sleep Stages; D014851:Wakefulness
chemical_list: D010208:Papaverine