Patch-Clamp TechniquesMembrane PotentialsPotassium ChannelsElectrophysiologyGlucose Clamp TechniqueIon ChannelsCalcium ChannelsElectric ConductivityIon Channel GatingCalciumSodium ChannelsAction PotentialsChloride ChannelsGuinea PigsPotassium Channel BlockersBariumCalcium Channels, L-TypePotassiumCalcium Channel BlockersCells, CulturedSodiumKineticsPotassium Channels, Voltage-GatedDose-Response Relationship, DrugChloridesAdenosine TriphosphateHeart VentriclesNeuronsCell MembraneSodium Channel BlockersPotassium Channels, Calcium-ActivatedMyocytes, CardiacCell LineMyocardium4-AminopyridineRabbitsAjmalineTetraethylammoniumHeartIon TransportCesiumRats, Sprague-DawleyTetrodotoxinRats, WistarXenopus laevisTime FactorsElectric StimulationVentricular FunctionPotassium Channels, Inwardly RectifyingCationsTetraethylammonium CompoundsQuinidineDihydropyridinesHypotonic SolutionsOocytesGlyburideNifedipineSodium CyanidePinacidilCell Adhesion MoleculesMolecular Sequence DataNiflumic AcidHeart AtriaCalcium Channel AgonistsDelayed Rectifier Potassium ChannelsMuscle CellsFlufenamic AcidNodose GanglionAnti-Arrhythmia AgentsCell Membrane PermeabilityAcetylcholineModels, BiologicalAnesthetics, Inhalationgamma-Aminobutyric AcidEgtazic AcidMibefradilNickelLarge-Conductance Calcium-Activated Potassium ChannelsGanglia, SpinalKATP ChannelsCalcium SignalingSinoatrial NodeXenonReceptors, GABA-AInsulinSignal TransductionHydrogen-Ion ConcentrationIonsSynaptic TransmissionThionucleotidesXenopusAmino Acid SequenceEnzyme InhibitorsOsmolar ConcentrationCyclic AMP-Dependent Protein KinasesIsofluraneProtein Kinase CAmilorideCadmiumCyclic AMP