PotassiumPotassium ChannelsPotassium Channel BlockersPotassium Channels, Voltage-GatedMembrane Potentials4-AminopyridineTetraethylammoniumDelayed Rectifier Potassium ChannelsPatch-Clamp TechniquesAction PotentialsPotassium Channels, Inwardly RectifyingTetraethylammonium CompoundsElectric ConductivityElectrophysiologyShaw Potassium ChannelsShal Potassium ChannelsShaker Superfamily of Potassium ChannelsPotassium Channels, Calcium-ActivatedPotassium, DietaryEther-A-Go-Go Potassium ChannelsPotassium DeficiencyNeuronsKCNQ1 Potassium ChannelSodiumBariumPotassium CompoundsKv1.4 Potassium ChannelAminopyridinesKCNQ Potassium ChannelsKv1.5 Potassium ChannelCalciumElapid VenomsGuinea PigsIon ChannelsBarium CompoundsIon Channel GatingCesiumKv1.3 Potassium ChannelShab Potassium ChannelsPotassium IsotopesKCNQ3 Potassium ChannelTetrodotoxinKv1.2 Potassium ChannelKCNQ2 Potassium ChannelPotassium ChloridePotassium Channels, Tandem Pore DomainApaminKv Channel-Interacting ProteinsKineticsHeart VentriclesLarge-Conductance Calcium-Activated Potassium ChannelsHeart AtriaCells, CulturedAnti-Arrhythmia AgentsScorpion VenomsGlyburideElectric StimulationCharybdotoxinPotassium IodideMuscarineRats, Sprague-DawleyMyocardiumSmall-Conductance Calcium-Activated Potassium ChannelsPotassium RadioisotopesDecapodiformesPalinuridaeDose-Response Relationship, DrugMyocytes, CardiacCalcium ChannelsSodium ChannelsG Protein-Coupled Inwardly-Rectifying Potassium ChannelsHeartRana catesbeianaCadmiumMolluscaTime FactorsVentricular FunctionIon TransportQuinidineHypokalemiaPyramidal CellsPotassium CitrateKv1.1 Potassium ChannelRabbitsOocytesXenopus laevisCalcium Channel BlockersPhenylenediaminesSodium Channel BlockersChloridesPhenethylaminesModels, NeurologicalRats, WistarLong QT SyndromePotassium PermanganateHyperkalemiaHelix (Snails)Mefenamic AcidAplysiaCell Separation