"The effects of Haloperidol, a depressing drug, were studíed on leamingand extinction of a visual díscrímínation task, In a maze situation, theexperimental animals (Chaetophractus villosus) receíved 0.5 mgjkg ofHaloperidol, while the control animals received 0.1 cm3jkg. ofphysiological solutíon, The...