Potassium ChannelsPotassiumPotassium Channel BlockersPotassium Channels, Voltage-GatedPotassium Channels, Inwardly RectifyingShal Potassium ChannelsIon ChannelsPatch-Clamp TechniquesShaker Superfamily of Potassium ChannelsIon Channel GatingCalcium ChannelsKv1.4 Potassium Channel4-AminopyridineKv1.3 Potassium ChannelKv Channel-Interacting ProteinsElectrophysiologyMembrane PotentialsTetraethylammoniumPotassium Channels, Calcium-ActivatedKv1.2 Potassium ChannelAction PotentialsDelayed Rectifier Potassium ChannelsKv1.1 Potassium ChannelElectric ConductivityEther-A-Go-Go Potassium ChannelsShaw Potassium ChannelsKCNQ1 Potassium ChannelTetraethylammonium CompoundsKv1.5 Potassium ChannelKCNQ Potassium ChannelsShab Potassium ChannelsLarge-Conductance Calcium-Activated Potassium ChannelsPotassium Channels, Tandem Pore DomainKATP ChannelsKCNQ2 Potassium ChannelCesiumCalciumKCNQ3 Potassium ChannelSodiumCalcium Channel BlockersChloride ChannelsMyocardiumSmall-Conductance Calcium-Activated Potassium ChannelsG Protein-Coupled Inwardly-Rectifying Potassium ChannelsHeart VentriclesGlyburideMyocytes, CardiacKineticsOocytesNeuronsCells, CulturedRats, Sprague-DawleyGuinea PigsXenopus laevisCalcium Channels, L-TypeAnti-Arrhythmia AgentsDose-Response Relationship, DrugHeartHeart AtriaRats, WistarVentricular FunctionXenopusTetrodotoxinIntermediate-Conductance Calcium-Activated Potassium ChannelsBariumCharybdotoxinScorpion VenomsCromakalimLarge-Conductance Calcium-Activated Potassium Channel alpha SubunitsSodium Channel BlockersPinacidilDogsPotassium, DietaryBarium CompoundsSulfonylurea ReceptorsMolecular Sequence DataRabbitsAdenosine TriphosphateTime FactorsAmino Acid SequenceApaminCalcium Channels, N-TypeSodium ChannelsPotassium DeficiencyIon TransportCell MembraneBenzopyransCyclic Nucleotide-Gated Cation ChannelsCalcium Channels, T-TypeTRPC Cation ChannelsCalcium Channel AgonistsPotassium CompoundsLarge-Conductance Calcium-Activated Potassium Channel beta SubunitsAminopyridinesReceptors, DrugPotassium ChlorideNicorandilCell SeparationProtein SubunitsMutation