Neural ConductionIon ChannelsHeart Conduction SystemCalcium ChannelsPotassium Channels, Inwardly RectifyingIon Channel GatingPotassium Channel BlockersCalcium Channel BlockersChloride ChannelsPotassium Channels, Voltage-GatedElectrophysiologyAtrioventricular NodeCalcium Channels, L-TypeKATP ChannelsPotassium Channels, Calcium-ActivatedAction PotentialsSodium Channel BlockersShaker Superfamily of Potassium ChannelsElectric ConductivityHeart BlockCalcium Channels, N-TypeCalcium Channels, T-TypeTRPC Cation ChannelsLarge-Conductance Calcium-Activated Potassium ChannelsCyclic Nucleotide-Gated Cation ChannelsKv1.2 Potassium ChannelNAV1.5 Voltage-Gated Sodium ChannelKv1.1 Potassium ChannelAcid Sensing Ion ChannelsEther-A-Go-Go Potassium ChannelsKv1.3 Potassium ChannelEpithelial Sodium ChannelsElectrocardiographyPotassiumMembrane PotentialsTRPM Cation ChannelsOocytesCalcium Channel AgonistsKv1.5 Potassium ChannelBone ConductionXenopus laevisTRPV Cation ChannelsArrhythmias, CardiacShab Potassium ChannelsMedian NerveKCNQ Potassium ChannelsKCNQ1 Potassium ChannelHeart AtriaElectric StimulationCardiac Pacing, ArtificialSmall-Conductance Calcium-Activated Potassium ChannelsRefractory Period, ElectrophysiologicalKv1.4 Potassium ChannelPatch-Clamp TechniquesAxonsTransient Receptor Potential ChannelsXenopusKineticsShaw Potassium ChannelsUlnar NervePeripheral NervesHyperpolarization-Activated Cyclic Nucleotide-Gated ChannelsTime FactorsMolecular Sequence DataAmino Acid SequenceElectrophysiologic Techniques, CardiacShal Potassium ChannelsHeartConnexinsMyocardiumG Protein-Coupled Inwardly-Rectifying Potassium ChannelsDogsKCNQ2 Potassium ChannelRanvier's NodesBariumSodiumAtrioventricular BlockSinoatrial NodeNeuronsRyanodine Receptor Calcium Release ChannelPurkinje FibersCalcium Channels, P-TypeRats, Sprague-DawleyAnti-Arrhythmia AgentsCells, CulturedCell MembraneHeart VentriclesGap JunctionsTibial NerveScorpion VenomsConnexin 43NAV1.2 Voltage-Gated Sodium ChannelDose-Response Relationship, DrugKCNQ3 Potassium ChannelIon TransportDelayed Rectifier Potassium ChannelsIntermediate-Conductance Calcium-Activated Potassium ChannelsLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsAtrial FlutterElectrodiagnosis