The results showed that intracollicular microinjection of MK-801 and AP7 previous to systemic injections of haloperidol significantly attenuated the catalepsy , as indicated by a reduced latency to step down from a horizontal bar .
O O O O O O O B-ChemicalEntity O B-ChemicalEntity O O O O O B-ChemicalEntity O O O B-DiseaseOrPhenotypicFeature O O O O O O O O O O O O O O O