Autonomic Nervous SystemSignal Processing, Computer-AssistedFourier AnalysisSpectrum AnalysisHeart RateMagnetic Resonance SpectroscopyBaroreflexElectroencephalographySpectrophotometry, InfraredSpectrophotometryMass SpectrometryMolecular StructureSpectrophotometry, UltravioletElectrocardiographySpectrometry, Mass, Fast Atom BombardmentDelta RhythmSympathetic Nervous SystemParasympathetic Nervous SystemSleep StagesPeriodicitySupine PositionVagus NerveSpectrum Analysis, RamanSound SpectrographyAutonomic Nervous System DiseasesElectroencephalography Phase SynchronizationBlood PressureAlgorithmsRespirationChromatography, High Pressure LiquidAlpha RhythmTime FactorsOscillometryGlycosidesHeart SoundsCircadian RhythmPostureBeta RhythmFractalsValsalva ManeuverSpectrometry, FluorescenceMolecular ConformationElectrocardiography, AmbulatoryTelemetrySleep, REMSleepPolysomnographyKineticsTilt-Table TestWakefulnessReproducibility of ResultsCircular DichroismAutonomic Nerve BlockReference ValuesPlant ExtractsTremorMolecular Sequence DataGas Chromatography-Mass SpectrometrySpectral KaryotypingChemistry, PhysicalSpectrometry, Mass, Electrospray IonizationIridoidsBepridilAmino Acid SequenceElectromyographyArousalBronchospirometryFermentationPhysicochemical PhenomenaNonlinear DynamicsOxidation-ReductionArrhythmia, SinusElectron Spin Resonance SpectroscopyLightTheta RhythmStreptomycesEntropyUltrasonographyStereoisomerismRetinal PigmentsCardiovascular SystemChemistryAuscultationHeartMicroscopy, Fluorescence, MultiphotonLeast-Squares AnalysisChemical PhenomenaPressoreceptorsEuphorbiaceaeDiterpenesBrainMetmyoglobinHead-Down TiltMicrospectrophotometryModels, CardiovascularStellate Ganglion3,4-MethylenedioxyamphetamineBufonidaeProtein ConformationSensitivity and Specificity