title: Evoked potentials in hyperkinetic and normal children under certainty and uncertainty: a placebo and methylphenidate study.
mesh_terms: D000161:Acoustic Stimulation; D001288:Attention / Q000187:drug effects; D002648:Child; D005071:Evoked Potentials / Q000187:drug effects; D006801:Humans; D006948:Hyperkinesis / Q000188:drug therapy* / Q000503:physiopathology; D008297:Male; D008774:Methylphenidate / Q000494:pharmacology / Q000627:therapeutic use*; D010919:Placebos
chemical_list: D010919:Placebos; D008774:Methylphenidate