title: Opposite effect of illumination and d-amphetamine upon activity in the squirrel monkey (Saimiri) and owl monkey (Aotes).
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D002940:Circadian Rhythm / Q000187:drug effects*; D003624:Darkness; D003913:Dextroamphetamine / Q000008:administration & dosage / Q000494:pharmacology*; D000882:Haplorhini; D008027:Light; D009043:Motor Activity / Q000187:drug effects*; D013045:Species Specificity
chemical_list: D003913:Dextroamphetamine