title: [2 kinds of sleep].
mesh_terms: D000661:Amphetamine / Q000494:pharmacology; D000818:Animals; D001463:Barbiturates / Q000494:pharmacology; D002540:Cerebral Cortex / Q000502:physiology*; D004325:Dreams; D004569:Electroencephalography; D004576:Electromyography; D005133:Eye Movements; D006801:Humans; D009132:Muscles / Q000502:physiology; D009290:Narcolepsy / Q000503:physiopathology; D012890:Sleep / Q000187:drug effects; D012895:Sleep, REM / Q000187:drug effects; D014364:Tryptophan / Q000494:pharmacology
chemical_list: D001463:Barbiturates; D014364:Tryptophan; D000661:Amphetamine
vernacular_title: Dva vida sna.