“Attenuation of the rate-decreasing effects of the highest dose of cocaine (30 mg/kg) also were observed after pretreatment with dizocilpine and magnesium chloride.”
“In addition, dizocilpine and magnesium chloride each attenuated the discriminative stimulus effects of higher doses of cocaine.”
“Selected doses of dizocilpine, magnesium chloride , and phencyclidine given in combination with 1 mg/kg cocaine produced more cocaine-appropriate responses than this dose of cocaine alone.”