Membrane PotentialsPotassiumMembrane Potential, MitochondrialAction PotentialsCell MembraneMembranesIntracellular MembranesElectrophysiologyElectric ConductivityCell Membrane PermeabilitySodiumCalciumMembrane LipidsPotassium ChannelsPatch-Clamp TechniquesChloridesIon ChannelsMembranes, ArtificialTetraethylammonium CompoundsTetrodotoxinNeuronsGuinea PigsTetraethylammoniumCesiumErythrocyte MembraneElectric StimulationMitochondriaMembrane FluidityMicroelectrodesTime FactorsOuabainBarium4-AminopyridineThoracicaCells, CulturedMusclesHydrogen-Ion ConcentrationCrustaceaAnuraIon Channel GatingBasement MembraneMitochondrial MembranesKineticsSodium ChannelsValinomycinBiological Transport, ActiveMolluscaAdenosine TriphosphateModels, BiologicalSynaptic MembranesAcetylcholinePotassium Channel BlockersMembrane Transport ProteinsAminopyridinesSynapsesFluorescent DyesCell LinePotassium Channels, Tandem Pore DomainRats, Sprague-DawleyAxonsSynaptic TransmissionPurkinje FibersThoriumRabbitsTemperatureMagnesiumDecapodiformesLipid BilayersTurtlesCalcium ChannelsPapillary MusclesHeartDose-Response Relationship, DrugMembrane GlycoproteinsEvoked PotentialsTrityl CompoundsCharybdotoxinRana catesbeianaSodium-Potassium-Exchanging ATPaseCarbonyl Cyanide p-TrifluoromethoxyphenylhydrazoneMicroscopy, ElectronIon TransportRats, WistarProtein TransportPotassium Channels, Inwardly RectifyingCarbonyl Cyanide m-Chlorophenyl HydrazoneExtracellular SpaceMuscle ContractionStrophanthidinGangliaLithiumPhotoreceptor CellsPotassium ChlorideAstacoideaModels, NeurologicalBarium CompoundsLiposomesMotor NeuronsDogsCations