Action PotentialsMembrane PotentialsSodiumPotassiumCell MembraneSodium ChannelsMembrane Potential, MitochondrialMembranesCalciumElectrophysiologyIntracellular MembranesIon ChannelsPatch-Clamp TechniquesTetrodotoxinMembrane LipidsElectric ConductivityCell Membrane PermeabilityElectric StimulationPotassium ChannelsGuinea PigsNeuronsMembranes, ArtificialTime FactorsKineticsHydrogen-Ion ConcentrationSodium IsotopesIon Channel GatingBiological Transport, ActiveIon TransportChloridesSodium ChlorideSodium Channel BlockersOuabainMitochondriaErythrocyte MembraneMicroelectrodesMembrane FluidityAnuraCations, MonovalentAxonsNeural ConductionCells, CulturedHeartLithiumModels, BiologicalTetraethylammonium CompoundsRabbitsPotassium Channel BlockersPurkinje FibersHeart Conduction SystemAdenosine Triphosphate4-AminopyridineRats, Sprague-DawleySynaptic TransmissionVentricular FunctionFluorescent DyesDogsCesiumTetraethylammoniumSynapsesIonsCalcium ChannelsDose-Response Relationship, DrugBasement MembraneMembrane Transport ProteinsValinomycinRats, WistarCationsMitochondrial MembranesCell LineMagnesiumPyramidal CellsSodium-Potassium-Exchanging ATPaseDendritesTemperatureBariumPapillary MusclesMusclesCarbonyl Cyanide m-Chlorophenyl HydrazoneHeart VentriclesMyocardiumPotassium Channels, Voltage-GatedMolecular Sequence DataOsmolar ConcentrationLipid BilayersDecapodiformesMyocytes, CardiacProtonsCarrier ProteinsCalcium SignalingMutationModels, NeurologicalBiological TransportEvoked PotentialsAmino Acid SequenceCalcium Channel BlockersComputer SimulationExtracellular SpaceMicroscopy, ElectronExcitatory Postsynaptic Potentials