Action PotentialsExcitatory Postsynaptic PotentialsSynapsesLong-Term PotentiationNeuronal PlasticitySynaptic TransmissionElectric StimulationPatch-Clamp TechniquesNeuronsSynaptic PotentialsNeural InhibitionTetrodotoxinMembrane PotentialsElectrophysiologyHippocampusPresynaptic TerminalsPyramidal Cellsgamma-Aminobutyric AcidBaclofenExcitatory Amino Acid AntagonistsGABA AntagonistsReceptors, N-Methyl-D-AspartateRats, Sprague-DawleyGABA-A Receptor AntagonistsGABA-B Receptor AgonistsCalciumGlutamic AcidReceptors, GABA-BReceptors, GABA-ARats, WistarDendritesSpinal CordInhibitory Postsynaptic PotentialsSynaptic MembranesGuinea PigsSodium ChannelsAxonsPost-Synaptic DensityEvoked PotentialsPotassium ChannelsNeuromuscular JunctionInterneuronsNeural ConductionReceptors, AMPAElectric ConductivityPotassiumVentricular FunctionHeartModels, Neurological4-AminopyridineMicroelectrodesMotor NeuronsHeart Conduction SystemTime FactorsNeurotransmitter AgentsMiniature Postsynaptic PotentialsAnimals, NewbornNeurons, AfferentPapillary MusclesReceptors, PresynapticSodium Channel Blockers6-Cyano-7-nitroquinoxaline-2,3-dione2-Amino-5-phosphonovalerateBicucullinePotassium Channel BlockersSodiumHeart VentriclesNeocortexPurkinje FibersReceptors, GlutamateTetraethylammonium CompoundsCalcium ChannelsCells, CulturedRefractory Period, ElectrophysiologicalIon ChannelsPotassium Channels, Voltage-GatedNerve Tissue ProteinsDendritic SpinesOrgan Culture TechniquesCalcium SignalingGuanylate KinaseAnti-Arrhythmia AgentsPurkinje CellsTetraethylammoniumMyocytes, CardiacModels, CardiovascularQuinoxalinesArrhythmias, CardiacElectrophysiological PhenomenaReceptors, CholinergicCalcium Channels, L-TypeIon Channel GatingDogsCalcium Channel BlockersCatsDelayed Rectifier Potassium ChannelsReaction TimeAfferent PathwaysBrain StemNerve Fibers