Neural ConductionCircadian RhythmHeart Conduction SystemAtrioventricular NodeHeart BlockElectrocardiographyAction PotentialsCardiac Pacing, ArtificialArrhythmias, CardiacAtrial FibrillationBone ConductionHeart AtriaMedian NerveBiological ClocksElectrophysiologic Techniques, CardiacRefractory Period, ElectrophysiologicalPeriodicityElectrophysiologyAtrial FlutterCatheter AblationSuprachiasmatic NucleusUlnar NerveAtrioventricular BlockAnti-Arrhythmia AgentsSinoatrial NodePeriod Circadian ProteinsPeripheral NervesCircadian Rhythm Signaling Peptides and ProteinsElectric StimulationActivity CyclesTibial NerveAtrial FunctionAxonsAphasia, ConductionSleep Disorders, Circadian RhythmWolff-Parkinson-White SyndromePurkinje FibersElectrodiagnosisPhotoperiodTime FactorsSural NerveBody Surface Potential MappingTachycardia, Atrioventricular Nodal ReentryCircadian ClocksDogsPeripheral Nervous System DiseasesTachycardia, SupraventricularCLOCK ProteinsAlpha RhythmNAV1.5 Voltage-Gated Sodium ChannelSciatic NerveMotor NeuronsHeart VentriclesHeart RateHeartDiabetic NeuropathiesBundle-Branch BlockConnexin 43Sodium ChannelsElectromyographyRanvier's NodesModels, CardiovascularPeroneal NerveCarpal Tunnel SyndromeTachycardia, ParoxysmalElectric CountershockConnexinsARNTL Transcription FactorsElectric ConductivityGap JunctionsFlecainideCardiac Complexes, PrematureNerve Fibers, MyelinatedNeurons, AfferentPolyneuropathiesTachycardiaTachycardia, VentricularProcainamideNerve FibersBradycardiaEvoked Potentials, SomatosensoryLightChronobiology DisordersVentricular FunctionPulmonary VeinsSpinal Nerve RootsDarknessEvoked PotentialsMyelin SheathReaction TimeMyocardiumLidocaineMembrane PotentialsEndocardiumCardiac ElectrophysiologySick Sinus SyndromeVoltage-Sensitive Dye ImagingElectrophysiological PhenomenaCatsPericardium