“In addition, both the dopamine D1 antagonist SCH 23390 [R-(+)-7-chloro-8-hydroxy-3-methyl-1-…,3,4,5-tetrahydro- 1H-3-benzazepine], the D2 antagonist eticlopride and the dopamine D1/D2 antagonist flupenthixol produced dose-dependent blockade … induced by either cocaine or methylphenidate.(ABSTRACT … AT 250 WORDS)”