the competitive antagonists of nmda , 2-amino-7-phosphonoheptanoate ( ap7 ) or 3- ( +/- ) -2-carboxypiperazin-4-yl ) propyl-1-phosphonic acid ( cpp ) also disrupted brightness discrimination when injected into the cerebral ventricles , with no increase in movements between trials .
C0205770
cpp
C0007799
cerebral ventricles