The interaction of high altitude and psychotropic drug action.
D000124:Achievement / Q000187:drug effects*; D000328:Adult; D000531:Altitude; D003061:Codeine / Q000494:pharmacology*; D004781:Environmental Exposure; D004809:Ephedrine / Q000494:pharmacology*; D006801:Humans; D007785:Lactose; D008297:Male; D010919:Placebos; D011581:Psychological Tests; D011930:Reaction Time
D010919:Placebos; D004809:Ephedrine; D007785:Lactose; D003061:Codeine