Heart Conduction SystemNeural ConductionHeartHeart RateAtrioventricular NodeHeart BlockHeart FailureHeart AtriaHeart DiseasesHeart Defects, CongenitalHeart TransplantationAction PotentialsCardiac Pacing, ArtificialProton Pump InhibitorsElectrocardiographyBone ConductionFetal HeartMedian NerveMyocardiumRefractory Period, ElectrophysiologicalArrhythmias, CardiacInfusion PumpsIon PumpsDogsHeart ValvesTime FactorsElectrophysiologic Techniques, CardiacUlnar NerveElectrophysiologyPeripheral NervesSinoatrial NodeAtrioventricular BlockMyocytes, CardiacPurkinje FibersMyocardial ContractionModels, CardiovascularTibial NerveElectric StimulationAtrial FunctionAxonsAphasia, ConductionAtrial FlutterCatheter AblationElectrodiagnosisSodium-Potassium-Exchanging ATPaseSural NerveAnti-Arrhythmia AgentsAtrial FibrillationWolff-Parkinson-White SyndromeConnexin 43Peripheral Nervous System DiseasesNAV1.5 Voltage-Gated Sodium ChannelInfusion Pumps, ImplantableSodium ChannelsTachycardiaMotor NeuronsHeart Function TestsSciatic NerveDiabetic NeuropathiesPotassiumPeroneal NerveMyocardial IschemiaHeart SeptumHeart Arrest, InducedTachycardia, Atrioventricular Nodal ReentryHeart VentriclesRanvier's NodesHemodynamicsEndocardiumCardiomyopathy, DilatedOuabainCarpal Tunnel SyndromeRabbitsSodiumConnexinsBody Surface Potential MappingBundle-Branch BlockPerfusionElectromyographyVentricular Function, LeftMembrane PotentialsElectric ConductivityCardiomyopathiesTachycardia, SupraventricularGap JunctionsNerve Fibers, MyelinatedRats, Sprague-DawleyCoronary DiseaseNerve FibersCalciumPolyneuropathiesEchocardiographyMyocardial InfarctionNeurons, AfferentDisease Models, AnimalTreatment OutcomeCardiomegalyHeart, ArtificialTachycardia, ParoxysmalCalcium-Transporting ATPases