Epigastric ArteriesHeart Conduction SystemAtrioventricular NodeTachycardia, Atrioventricular Nodal ReentryWolff-Parkinson-White SyndromeNeural ConductionElectric ConductivityGap JunctionsTachycardia, SupraventricularElectrocardiographyCatheter AblationCardiac Pacing, ArtificialHeart BlockArrhythmias, CardiacElectrophysiologyMyocytes, CardiacSinoatrial NodeIon Channel GatingHeart AtriaPotassium ChannelsRecurrenceIon TransportMembrane PotentialsPotassiumOocytesIon ChannelsAction PotentialsBone ConductionXenopus laevisLipid BilayersFollow-Up StudiesMedian NerveMutagenesis, Site-DirectedRefractory Period, ElectrophysiologicalUlnar NervePeripheral NervesElectrophysiologic Techniques, CardiacModels, MolecularAtrioventricular BlockTibial NerveAmino Acid SequenceAphasia, ConductionAtrial FlutterElectrodiagnosisAxonsSural NervePurkinje FibersKineticsPeripheral Nervous System DiseasesElectric StimulationSciatic NerveMotor NeuronsAtrial FunctionDiabetic NeuropathiesNAV1.5 Voltage-Gated Sodium ChannelRanvier's NodesDogsConnexin 43Peroneal NerveAtrial FibrillationCarpal Tunnel SyndromeSodium ChannelsBody Surface Potential MappingBundle-Branch BlockHeart VentriclesAnti-Arrhythmia AgentsElectromyographyModels, CardiovascularConnexinsHeartNerve Fibers, MyelinatedPolyneuropathiesTachycardiaNerve FibersNeurons, AfferentTime FactorsEvoked Potentials, SomatosensoryMyelin SheathTachycardia, ParoxysmalFlecainideSpinal Nerve RootsVentricular FunctionLidocaineProcainamideDemyelinating DiseasesMyocardiumReaction TimeVoltage-Sensitive Dye ImagingBradycardiaEvoked PotentialsSick Sinus SyndromeEndocardiumCardiac ElectrophysiologyPericardiumCardiac Complexes, PrematureElectrophysiological PhenomenaTachycardia, VentricularBrugada SyndromeDisopyramideHeart Rate