Presynaptic TerminalsMembrane PotentialsReceptors, PresynapticPatch-Clamp TechniquesElectrophysiologyElectric ConductivityIon ChannelsIon Channel GatingCalciumPotassium ChannelsAction PotentialsSynapsesSynaptic TransmissionCalcium ChannelsPotassiumNeuronsTetraethylammonium CompoundsKineticsTetraethylammoniumElectric StimulationTetrodotoxinVoltage-Dependent Anion Channel 1BariumCesiumVoltage-Dependent Anion ChannelsSodiumOocytesXenopus laevisCalcium Channel BlockersExcitatory Postsynaptic PotentialsTime FactorsRats, Sprague-DawleyPotassium Channel BlockersCells, Culturedomega-Conotoxin GVIANeurotransmitter AgentsHippocampusSynaptic VesiclesGlutamic AcidDecapodiformesPotassium Channels, Voltage-GatedModels, BiologicalNeural Inhibition4-AminopyridineDose-Response Relationship, DrugBatrachotoxinsgamma-Aminobutyric AcidSodium ChannelsRana esculentaChloridesGuinea PigsNifedipineXenopusMagnesiumChloride ChannelsNeuromuscular JunctionEgtazic AcidReceptors, N-Methyl-D-AspartateRats, WistarRana temporariaPyramidal CellsCadmiumRana pipiensCell LineMolecular Sequence DataLipid BilayersMusclesNeuronal PlasticityAmbystomaNeurons, AfferentModels, NeurologicalQuaternary Ammonium CompoundsNickelCalcium Channels, L-TypeSuperior Cervical GanglionIon TransportMathematicsHydrogen-Ion ConcentrationHeartAcetylcholineRabbitsAmino Acid SequenceBiophysicsMutationRubidiumReceptors, GABA-BCell MembraneCell Membrane PermeabilityVentricular FunctionN-MethylaspartateSynaptic MembranesExcitatory Amino Acid AntagonistsAxonsNerve EndingsSynaptosomesCations, DivalentNerve Tissue ProteinsScorpion VenomsCalcium Channels, N-TypeAdenosine Triphosphate