CocaineAnestheticsAnesthetics, LocalAnesthetics, InhalationCocaine-Related DisordersAnesthetics, GeneralAnesthetics, IntravenousDopamine Uptake InhibitorsIsofluraneCrack CocaineHalothaneSelf AdministrationAnesthetics, CombinedEnfluraneLidocaineMethyl EthersAnesthesiaAnesthetics, DissociativePropofolAnesthesia, LocalMethoxyfluraneBupivacaineAnesthesia, GeneralConditioning, OperantDose-Response Relationship, DrugAnesthesia, InhalationBenzocaineKetamineNucleus AccumbensAnesthesia, DentalTetracaineProcaineNitrous OxideNerve BlockPrilocaineThiopentalReinforcement (Psychology)EtomidateBehavior, AnimalRats, Sprague-DawleyBehavior, AddictiveEtherDrug-Seeking BehaviorPentobarbitalReinforcement ScheduleAnesthesiologyDibucaineMepivacaineAnesthesia, IntravenousMotor ActivityEtidocaineExtinction, PsychologicalDopamineNarcoticsCarticaineDopamine Plasma Membrane Transport ProteinsDrug InteractionsAdjuvants, AnesthesiaChloroformAnesthesia, ConductionAnesthesia, EpiduralHeroinXylazineFentanylAnesthesia Recovery PeriodAnesthesia, ObstetricalEthersBenztropineSubstance Withdrawal SyndromeRewardHypnosis, AnestheticTime FactorsPregnanedionesXenonAnesthesia, SpinalSubstance Abuse DetectionButyrylcholinesteraseStreet DrugsHypnotics and SedativesSubstance-Related DisordersDopamine AntagonistsDopamine AgonistsChlorofluorocarbonsHeroin DependenceMedetomidineBrainMonitoring, IntraoperativeReceptors, Dopamine D2Rats, Long-EvansAnalysis of VarianceReceptors, GABA-AOctanolsAnesthesia Department, HospitalCorpus StriatumPain, PostoperativeAmbulatory Surgical ProceduresChloraloseVentral Tegmental AreaConditioning (Psychology)Microdialysis