Excitatory Postsynaptic PotentialsSynaptic TransmissionHippocampusLong-Term PotentiationSynapsesElectric StimulationCA1 Region, HippocampalPerforant PathwayEvoked PotentialsDendritesExcitatory Amino Acid AntagonistsReceptors, N-Methyl-D-AspartateNeuronal PlasticityNeuronsRats, Sprague-DawleyElectrophysiologyNeural InhibitionRats, WistarPyramidal CellsAction PotentialsInterneurons2-Amino-5-phosphonovaleratePatch-Clamp TechniquesGABA AntagonistsInhibitory Postsynaptic PotentialsAfferent Pathways6-Cyano-7-nitroquinoxaline-2,3-dioneMembrane PotentialsCatsGlutamic AcidMotor Neuronsgamma-Aminobutyric AcidBicucullinePresynaptic TerminalsDentate GyrusReceptors, AMPARetinal Ganglion CellsNeural PathwaysQuinoxalinesExcitatory Amino Acid AgonistsSynaptic PotentialsModels, NeurologicalNeurons, AfferentAxonsPicrotoxinTetrodotoxinN-Methylaspartatealpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic AcidReceptors, PresynapticAnimals, Inbred StrainsReceptors, GlutamateThalamusBaclofenReceptors, GABA-BNeurotransmitter AgentsGanglia, InvertebrateReceptors, GABA-ARetinaIsoquinolinesGABA-A Receptor AntagonistsAnimals, NewbornNeocortexReceptors, NeurotransmitterNerve NetSpinal CordStrychnineReceptors, Metabotropic GlutamateExcitatory Amino AcidsSynaptic MembranesVisual PathwaysAstacoideaGABA-B Receptor AntagonistsVestibulocochlear NerveAmacrine CellsBrain StemMyenteric PlexusMiniature Postsynaptic PotentialsIontophoresisTime FactorsOrgan Culture TechniquesGlutamatesKynurenic AcidVisual CortexGlycineReaction TimeNerve FibersCerebral CortexGuinea PigsGanglia, AutonomicGABA AgonistsSomatosensory CortexPurkinje CellsCalciumReceptors, GABAMicroelectrodesCycloleucineMossy Fibers, HippocampalAplysiaPyramidal TractsDendritic Spines