Action PotentialsMembrane PotentialsMembrane Potential, MitochondrialCell MembraneIntracellular MembranesMembranesElectrophysiologyCalciumPotassiumPatch-Clamp TechniquesMembrane LipidsProtein Sorting SignalsElectric StimulationTetrodotoxinNeuronsPotassium ChannelsSodiumElectric ConductivityMembranes, ArtificialGuinea PigsCell Membrane PermeabilitySignal TransductionTime FactorsIon ChannelsMitochondriaSodium ChannelsMicroelectrodesErythrocyte MembraneMembrane FluidityCells, CulturedNeural ConductionHeartTetraethylammonium CompoundsPotassium Channel BlockersModels, BiologicalSynaptic Transmission4-AminopyridineAxonsVentricular FunctionRats, Sprague-DawleyKineticsSynapsesChloridesFluorescent DyesIon Channel GatingCell LineBasement MembraneHeart Conduction SystemCalcium ChannelsTetraethylammoniumMitochondrial MembranesHydrogen-Ion ConcentrationRabbitsDendritesPyramidal CellsValinomycinDogsCalcium SignalingRats, WistarMolecular Sequence DataAdenosine TriphosphatePurkinje FibersPapillary MusclesMembrane Transport ProteinsHeart VentriclesModels, NeurologicalPotassium Channels, Voltage-GatedDose-Response Relationship, DrugBariumMyocytes, CardiacEvoked PotentialsAmino Acid SequenceProtein TransportMembrane GlycoproteinsMutationExcitatory Postsynaptic PotentialsMyocardiumSodium Channel BlockersCesiumAnuraBiological Transport, ActiveCalcium Channel BlockersMicroscopy, ElectronSynaptic MembranesLipid BilayersCarrier ProteinsMusclesComputer SimulationNeurons, AfferentMicroscopy, FluorescenceOuabainCalcium Channels, L-TypeMotor NeuronsCarbonyl Cyanide p-TrifluoromethoxyphenylhydrazoneMicroscopy, ConfocalAnimals, NewbornTrityl CompoundsHippocampusIon TransportModels, Cardiovascular