EEG changes produced by heroin and methadone.
D001519:Behavior / Q000187:drug effects*; D004569:Electroencephalography; D003932:Heroin / Q000494:pharmacology*; D006801:Humans; D007275:Injections, Intravenous; D008691:Methadone / Q000494:pharmacology*
D003932:Heroin; D008691:Methadone