title: Effects of psychodysleptic drug psilocybin on visual perception. Changes in brightness preference.
mesh_terms: D002986:Clinical Trials as Topic; D003623:Dark Adaptation; D004106:Dilatation; D004192:Discrimination, Psychological; D006801:Humans; D008027:Light; D008950:MMPI; D011562:Psilocybin / Q000494:pharmacology*; D011605:Psychoses, Substance-Induced; D011680:Pupil / Q000528:radiation effects; D014796:Visual Perception / Q000187:drug effects*
chemical_list: D011562:Psilocybin