Neural ConductionMuscle ContractionHeart Conduction SystemIsometric ContractionUterine ContractionMyocardial ContractionAtrioventricular NodeElectric StimulationHeart BlockMuscle, SmoothAction PotentialsElectrocardiographyElectromyographyBone ConductionMuscle, SkeletalGuinea PigsMedian NerveCardiac Pacing, ArtificialElectrophysiologyArrhythmias, 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 NodeCatheter AblationSural NerveMyocardiumSciatic NerveAcetylcholineVentricular FunctionGastrointestinal MotilityWolff-Parkinson-White SyndromePeroneal 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 AgentsTachycardia, Atrioventricular Nodal ReentryCarpal Tunnel SyndromeVerapamilElectric ConductivityTetrodotoxinGap JunctionsHeart RateVas DeferensConnexinsMyocytes, CardiacNerve FibersMuscle Fibers, SkeletalNerve Fibers, MyelinatedTachycardiaTorqueCalcium Channel BlockersIleum