MicroinjectionsMedulla OblongataSolitary NucleusPonsMuscimolGABA AgonistsBradycardiaRats, Sprague-DawleyPeriaqueductal GrayParaventricular Hypothalamic NucleusBicucullineReticular FormationRaphe NucleiSplanchnic NervesRats, WistarDecerebrate StateUrocortinsSympathetic Nervous SystemVagotomyKynurenic AcidHeart RateGlutamic AcidSleep, REMNucleus AccumbensPhrenic NerveTegmentum MesencephaliGABA AntagonistsBlood PressureBehavior, AnimalOncogene Proteins v-fosDose-Response Relationship, DrugBaroreflexCatsBrain StemCardiovascular SystemNeuronsDrug Administration RoutesVagus NerveInjections, IntraventricularExcitatory Amino Acid AntagonistsCholinergic AgonistsReflexOocytesExcitatory Amino Acid AgonistsIbotenic AcidStereotaxic TechniquesGABA-A Receptor AntagonistsPreoptic AreaHypothalamusBaclofenWakefulnessEnkephalin, Ala(2)-MePhe(4)-Gly(5)-Cholinergic FibersAmphibian ProteinsReceptors, Corticotropin-Releasing HormoneMuscle TonusVentral Tegmental AreaAmygdalaNeural Pathways8-Hydroxy-2-(di-n-propylamino)tetralinHypoglossal NerveCorticotropin-Releasing HormoneCarbacholGene Expression RegulationLidocaineTrigeminal NucleiRespiratory RateTranscription, GeneticReceptors, GlutamateMorphineArterial Pressuregamma-Aminobutyric AcidTime FactorsDopamine AntagonistsProtein BiosynthesisMotor ActivityArcuate NucleusInjectionsSerotonin Receptor AgonistsCell LineMolecular Sequence DataSerotonin AntagonistsMesencephalonN-MethylaspartateAnalysis of VarianceElectric StimulationAmino Acid SequenceCells, CulturedCocaineBase SequenceChemoreceptor CellsReceptors, OpioidNaloxoneNeuropeptidesReverse Transcriptase Polymerase Chain ReactionConditioning, OperantRespirationKainic AcidXenopusNarcotic Antagonists