title: Experimental acceleration and slowing of REM sleep ultradian rhythm by cholinergic agonist and antagonist.
mesh_terms: D000109:Acetylcholine / Q000502:physiology; D000328:Adult; D001115:Arecoline / Q000494:pharmacology*; D001921:Brain / Q000187:drug effects; D005260:Female; D006801:Humans; D008297:Male; D010507:Periodicity / Q000187:drug effects; D012601:Scopolamine / Q000494:pharmacology*; D012895:Sleep, REM / Q000187:drug effects*
chemical_list: D001115:Arecoline; D012601:Scopolamine; D000109:Acetylcholine