PubMed · 1989 · 25 citations · 0 references
MedicineNeurosciencePharmacologyBehavioral NeuroscienceNeuropharmacologyPsychopharmacologyAddictionAddiction NeurobiologyDrug DependenceDrugs Of AbuseOpioid AnalgesicsPsychostimulant PharmacologyCentral Nervous System Stimulant MechanismsEndogenous Opioid ModulationPrimate PharmacologyPsychostimulant DependenceSelf-administration Paradigms