title: Psychophysics of excitation and tranquilization from a steady-state perspective.
mesh_terms: D000661:Amphetamine / Q000494:pharmacology; D000818:Animals; D001244:Association; D005075:Biological Evolution; D001921:Brain / Q000187:drug effects / Q000502:physiology; D000697:Central Nervous System Stimulants / Q000494:pharmacology*; D003142:Communication; D003491:Cybernetics; D004056:Differential Threshold; D004325:Dreams; D006212:Hallucinations; D006213:Hallucinogens / Q000494:pharmacology; D006801:Humans; D007858:Learning; D008433:Mathematics; D008606:Mental Processes; D010465:Perception / Q000187:drug effects; D011562:Psilocybin / Q000494:pharmacology; D011601:Psychophysics; D011817:Rabbits; D012890:Sleep / Q000187:drug effects; D012895:Sleep, REM; D013649:Taste; D013995:Time; D013997:Time Factors; D014149:Tranquilizing Agents / Q000494:pharmacology*; D014705:Verbal Behavior
chemical_list: D000697:Central Nervous System Stimulants; D006213:Hallucinogens; D014149:Tranquilizing Agents; D011562:Psilocybin; D000661:Amphetamine