Atrioventricular NodeTachycardia, Atrioventricular Nodal ReentryHeart Conduction SystemWolff-Parkinson-White SyndromeTachycardia, SupraventricularCatheter AblationNeural ConductionMuscle ContractionCardiac Pacing, ArtificialHeart BlockElectrocardiographyElectrophysiologyIsometric ContractionRecurrenceUterine ContractionMyocardial ContractionFollow-Up StudiesElectric StimulationMuscle, SmoothAction PotentialsElectromyographyBone ConductionMuscle, SkeletalGuinea PigsMedian NerveArrhythmias, CardiacHeart AtriaCalciumMotor NeuronsDogsIsotonic ContractionRefractory Period, ElectrophysiologicalVasoconstrictionUlnar NervePeripheral NervesTime FactorsTibial NerveElectrophysiologic Techniques, CardiacMusclesHeartRabbitsAtrioventricular BlockMuscle FatigueHeart VentriclesAtrial FunctionMuscle, Smooth, VascularAxonsMuscle RelaxationPurkinje FibersElectrodiagnosisPotassium ChlorideAphasia, ConductionAtrial FlutterDose-Response Relationship, DrugSinoatrial NodeSural NerveMyocardiumSciatic NerveAcetylcholineVentricular FunctionGastrointestinal MotilityPeroneal NerveCatsAtropinePeripheral Nervous System DiseasesMembrane PotentialsPotassiumModels, CardiovascularVasoconstrictor AgentsTracheaConnexin 43NorepinephrineNeurons, AfferentRats, Sprague-DawleyUrinary BladderNAV1.5 Voltage-Gated Sodium ChannelDiabetic NeuropathiesRats, WistarPeristalsisSodium ChannelsBundle-Branch BlockNifedipineAtrial FibrillationPhenylephrineRanvier's NodesBody Surface Potential MappingAnti-Arrhythmia AgentsCarpal Tunnel SyndromeVerapamilElectric ConductivityTetrodotoxinGap JunctionsHeart RateVas DeferensConnexinsMyocytes, CardiacNerve FibersMuscle Fibers, SkeletalNerve Fibers, MyelinatedTachycardia