Accessory Atrioventricular BundleMagnetic Resonance Imaging, InterventionalElectrophysiologic Techniques, CardiacTachycardia, SupraventricularElectrophysiologyCatheter AblationWolff-Parkinson-White SyndromeTachycardia, VentricularCardiac Pacing, ArtificialElectrocardiographyArrhythmias, CardiacCardiac ElectrophysiologyElectrophysiological PhenomenaElectrophysiological ProcessesAction PotentialsPatch-Clamp TechniquesHeart Conduction SystemMembrane PotentialsModels, CardiovascularVoltage-Sensitive Dye ImagingAtrioventricular NodeHeart AtriaNeuronsBody Surface Potential MappingHeartAtrial FunctionIon ChannelsNeurophysiologyElectroretinographyMyocytes, CardiacAtrial FibrillationSodium ChannelsIon Channel GatingBundle of HisCalciumComputer SimulationPotassium ChannelsRats, Sprague-DawleyMicroelectrodesElectric StimulationRefractory Period, ElectrophysiologicalPotassium Channels, Voltage-GatedDogsSodium Channel BlockersEpicardial MappingTime FactorsEther-A-Go-Go Potassium ChannelsPleural CavityElectroencephalographyNAV1.5 Voltage-Gated Sodium ChannelSynapsesOptogeneticsCalcium SignalingHeart BlockVentricular FunctionSynaptic TransmissionXenopus laevisElectrodes, ImplantedElectrodiagnosisElectrooculographyHeart VentriclesEquipment DesignPacemaker, Artificialgamma-Aminobutyric AcidDelayed Rectifier Potassium ChannelsTachycardia, ParoxysmalNeural ConductionHippocampusEvoked PotentialsOocytesElectrodesTachycardia, Atrioventricular Nodal ReentryAnti-Arrhythmia AgentsPotassiumHEK293 CellsCalcium Channels, L-TypeElectric ConductivityAtrial FlutterKCNQ Potassium ChannelsPurkinje FibersPotassium Channel BlockersDose-Response Relationship, DrugPericardiumDisease Models, AnimalLong QT SyndromeTachycardia, Ectopic AtrialPulmonary VeinsNerve NetRetinaMuscle CellsCells, CulturedLigand-Gated Ion ChannelsCalcium Channels, T-TypeSinoatrial NodeEvoked Potentials, VisualGuinea PigsModels, BiologicalAnimals, NewbornReceptors, GABA-ASomatosensory Cortex