Effects of scopolamine, atropine, and d-amphetamine on internal and external control of responding on non-reinforced trials.
D000818:Animals; D001285:Atropine / Q000494:pharmacology*; D003864:Depression, Chemical; D003913:Dextroamphetamine / Q000494:pharmacology*; D007389:Internal-External Control / Q000187:drug effects*; D008297:Male; D051381:Rats; D012054:Reinforcement, Psychology; D012601:Scopolamine / Q000494:pharmacology*
D001285:Atropine; D012601:Scopolamine; D003913:Dextroamphetamine