Action PotentialsMolecular Sequence DataAmino Acid SequenceBase SequenceCloning, MolecularSignal TransductionProtein Sorting SignalsElectrophysiologyMembrane PotentialsPatch-Clamp TechniquesElectric StimulationTetrodotoxinCalciumNeuronsSodium ChannelsGuinea PigsPotassium ChannelsVentricular FunctionNeural ConductionHeartPotassiumHeart Conduction SystemAxonsPapillary MusclesElectric ConductivitySynaptic TransmissionMicroelectrodes4-AminopyridineDendritesPyramidal CellsTime FactorsHeart VentriclesSodiumPurkinje FibersSynapsesPotassium Channel BlockersTetraethylammonium CompoundsMyocytes, CardiacPotassium Channels, Voltage-GatedRefractory Period, ElectrophysiologicalModels, CardiovascularAnti-Arrhythmia AgentsExcitatory Postsynaptic PotentialsModels, NeurologicalDogsSodium Channel BlockersArrhythmias, CardiacIon ChannelsRats, Sprague-DawleyCalcium SignalingEvoked PotentialsNeurons, AfferentCalcium ChannelsDelayed Rectifier Potassium ChannelsTetraethylammoniumCells, CulturedMyocardiumCalcium Channels, L-TypeMyocardial ContractionMotor NeuronsSignal Processing, Computer-AssistedIon Channel GatingHeart AtriaRats, WistarVoltage-Sensitive Dye ImagingComputer SimulationSinoatrial NodeAtrial FunctionHippocampusElectrophysiological PhenomenaEndocardiumRabbitsReaction TimeNeural InhibitionCalcium Channel BlockersInterneuronsAnimals, NewbornAnuraPericardiumKineticsPresynaptic TerminalsModels, BiologicalCatsQuinidineNeurotransmitter AgentsLong QT SyndromeEther-A-Go-Go Potassium ChannelsMuscle ContractionBariumNeocortexDose-Response Relationship, DrugGanglia, SpinalLidocainegamma-Aminobutyric AcidNeuromuscular JunctionElectrocardiographyCesiumDifferential ThresholdMusclesSensory Receptor Cells