Wakefulness-Promoting AgentsSchizophreniaReceptors, Adrenergic, alpha-2VasodilationSchizophrenic PsychologyInterleukin 1 Receptor Antagonist ProteinSchizophrenia, ParanoidAntipsychotic AgentsNeurokinin-1 Receptor AntagonistsDose-Response Relationship, DrugRats, Sprague-DawleySchizophrenia, DisorganizedPurinergic P1 Receptor AntagonistsSchizophrenia, ChildhoodPsychotic DisordersPiperidinesExcitatory Amino Acid AntagonistsVasodilator AgentsDopamine AntagonistsHistamine H2 AntagonistsSerotonin 5-HT3 Receptor AntagonistsSchizophrenia, CatatonicAngiotensin Receptor AntagonistsPsychiatric Status Rating ScalesRats, WistarNitric OxideSerotonin 5-HT2 Receptor AntagonistsAdenosine A2 Receptor AntagonistsAcetylcholineEndothelium, VascularBrainHormone AntagonistsAdenosine A1 Receptor AntagonistsForearmReceptors, EndothelinSchizotypal Personality DisorderRegional Blood FlowPurinergic P2 Receptor AntagonistsCognition DisordersAnalysis of VarianceMuscarinic AntagonistsArteriolesReceptors, N-Methyl-D-AspartateClozapineNeuropsychological TestsNarcotic AntagonistsHistamine H1 AntagonistsSchizophrenic LanguageHaloperidolSerotonin AntagonistsNitroprussideDizocilpine MaleateAdenosineTime FactorsReceptors, SerotoninReceptor, Endothelin ABlood PressureVasoconstrictionReceptors, Adrenergic, alphaHistamine AntagonistsGABA-A Receptor AntagonistsPrefrontal CortexAdrenergic alpha-1 Receptor AntagonistsGABA AntagonistsRisperidoneSialoglycoproteinsBipolar DisorderBradykininAdrenergic alpha-AntagonistsNicotinic AntagonistsDisease Models, AnimalReceptors, Dopamine D2Enzyme InhibitorsBrief Psychiatric Rating Scalealpha 1-AntitrypsinSerotonin 5-HT1 Receptor AntagonistsLeukotriene AntagonistsDrug Interactionsalpha7 Nicotinic Acetylcholine ReceptorPyridinesSensory GatingBiphenyl CompoundsVascular ResistanceDelusionsTetrazolesEndothelin-1BenzazepinesReceptors, Interleukin-1HallucinationsNeuronsDopamineAdrenergic alpha-2 Receptor AntagonistsBenzodiazepinesRadioligand AssayNitric Oxide SynthaseBehavior, AnimalDogsSignal TransductionStartle ReactionNG-Nitroarginine Methyl Ester