Neural ConductionHeart Conduction SystemAtrioventricular NodeHeart BlockElectrocardiographyAction PotentialsBone ConductionMedian NerveDelayed DiagnosisCardiac Pacing, ArtificialPrenatal DiagnosisArrhythmias, CardiacEarly DiagnosisRefractory Period, ElectrophysiologicalUlnar NerveSensitivity and SpecificityHeart AtriaPeripheral NervesElectrophysiologic Techniques, CardiacElectrophysiologyAtrioventricular BlockElectrodiagnosisTime FactorsTibial NerveAtrial FlutterAphasia, ConductionAxonsSural NerveDiagnosisPeripheral Nervous System DiseasesPurkinje FibersCatheter AblationSinoatrial NodeRetrospective StudiesWolff-Parkinson-White SyndromeDogsElectric StimulationDiabetic NeuropathiesSciatic NerveMotor NeuronsAtrial FunctionNAV1.5 Voltage-Gated Sodium ChannelCarpal Tunnel SyndromeTachycardia, Atrioventricular Nodal ReentryRanvier's NodesPeroneal NerveAtrial FibrillationConnexin 43Heart VentriclesBundle-Branch BlockBody Surface Potential MappingSodium ChannelsElectromyographyAnti-Arrhythmia AgentsPolyneuropathiesHeartModels, CardiovascularNerve Fibers, MyelinatedDiagnostic ErrorsConnexinsFollow-Up StudiesTachycardiaTachycardia, SupraventricularTreatment OutcomePredictive Value of TestsNerve FibersElectric ConductivityBiopsyProspective StudiesTomography, X-Ray ComputedGap JunctionsEvoked Potentials, SomatosensoryNeurons, AfferentReproducibility of ResultsDiagnosis, Computer-AssistedTachycardia, ParoxysmalSpinal Nerve RootsMyelin SheathNursing DiagnosisFlecainideMagnetic Resonance ImagingVentricular FunctionDemyelinating DiseasesMyocardiumPrognosisInfant, NewbornLidocaineReaction TimeRisk FactorsProcainamideBradycardiaPregnancyPericardiumVoltage-Sensitive Dye ImagingEndocardiumEvoked PotentialsPreimplantation DiagnosisSick Sinus SyndromeFetal DiseasesCardiac Electrophysiology