Frühauf, A [Critical flicker fusion during the action of different drugs. I. Coffeine and meprobamate (including a full description of the method)]. [electronic resource] - Psychopharmacologia 1971 - 382-9 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article Standard No.: 10.1007/BF02419061 doi Subjects--Topical Terms: Age FactorsCaffeine--pharmacologyFlicker Fusion--drug effectsHumansMeprobamate--pharmacologyPlacebos