Membrane PotentialsIon Channel GatingElectric ConductivityPatch-Clamp TechniquesElectrophysiologyIon ChannelsPotassium ChannelsAction PotentialsPotassiumOocytesCalciumXenopus laevisSodiumCalcium ChannelsKineticsShaker Superfamily of Potassium ChannelsBariumPotassium Channels, Voltage-GatedElectricityTetraethylammoniumElectric StimulationXenopusTetrodotoxinCesiumTetraethylammonium CompoundsNeuronsDecapodiformesModels, BiologicalPotassium Channel BlockersElectric CapacitanceChloridesCalcium Channels, L-TypeTime FactorsMicroelectrodesSodium Channel BlockersGuinea PigsLarge-Conductance Calcium-Activated Potassium ChannelsCalcium Channel BlockersRana pipiensElectric Power SuppliesBiophysicsHyperpolarization-Activated Cyclic Nucleotide-Gated ChannelsEther-A-Go-Go Potassium ChannelsCell MembraneKv1.2 Potassium ChannelElectrochemistryIon TransportBiophysical PhenomenaCyclic Nucleotide-Gated Cation ChannelsRana esculentaRana catesbeianaMathematicsChloride ChannelsElectrodesPurkinje FibersAnuraHeartCell Membrane PermeabilityModels, NeurologicalHydrogen-Ion ConcentrationLipid BilayersSpider VenomsRana temporariaHeart Conduction SystemVentricular FunctionMyocardiumPotassium Channels, Calcium-ActivatedMusclesRNA, ComplementaryScorpion VenomsDose-Response Relationship, DrugEgtazic AcidBatrachotoxinsAmbystomaAxonsBiophysical ProcessesCadmiumElectrophysiological PhenomenaElectric ImpedanceHeart VentriclesMagnesiumCationsElectromagnetic FieldsAmino Acid SequenceProtein Structure, TertiaryMolluscaConnexinsMolecular Sequence DataGap JunctionsRabbitsNifedipineRats, Sprague-DawleySarcoplasmic ReticulumElectronicsLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsCalcium Channels, T-TypeMutationSinoatrial NodePotassium Channels, Inwardly RectifyingComputer Simulation