title: Cholinergic mechanisms in discrimination learning as a function of stimuli.
mesh_terms: D000109:Acetylcholine / Q000037:antagonists & inhibitors*; D000818:Animals; D001285:Atropine / Q000494:pharmacology*; D003463:Cues; D004193:Discrimination Learning / Q000187:drug effects*; D051381:Rats
chemical_list: D001285:Atropine; D000109:Acetylcholine