Scott, T R Lack of effect of stimulant and depressant drugs on spiral aftereffect. [electronic resource] - Perceptual and motor skills Jun 1967 - 1263-70 p. digital Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article ISSN: 0031-5125 Standard No.: 10.2466/pms.1967.24.3c.1263 doi Subjects--Topical Terms: AdultAmobarbital--pharmacologyAnalysis of VarianceDextroamphetamine--pharmacologyFemaleFigural Aftereffect--drug effectsHumansMaleMotion Perception--drug effectsPlacebosSize Perception--drug effectsTime Factors