SynapsesExcitatory Postsynaptic PotentialsSynaptic TransmissionDendritic SpinesHippocampusNeuronsReceptors, AMPAImmunological SynapsesNeuronal PlasticityPresynaptic TerminalsDendritesNeural InhibitionReceptors, N-Methyl-D-AspartateExcitatory Amino Acid AntagonistsLong-Term PotentiationPatch-Clamp TechniquesElectric StimulationGlutamic AcidPost-Synaptic DensityPyramidal CellsInterneuronsVesicular Glutamate Transport Protein 1Guanylate Kinasegamma-Aminobutyric AcidRats, Sprague-DawleyNerve Tissue ProteinsReceptors, GlutamateAction PotentialsSynaptic VesiclesLong-Term Synaptic DepressionSynaptic MembranesModels, NeurologicalAnimals, NewbornElectrical SynapsesNeurotransmitter AgentsInhibitory Postsynaptic PotentialsSynaptic PotentialsCA1 Region, HippocampalGABA AntagonistsExcitatory Amino Acid AgonistsElectrophysiologyExcitatory Amino AcidsExcitatory Amino Acid Agents6-Cyano-7-nitroquinoxaline-2,3-dioneCells, CulturedNeocortexPurkinje CellsReceptors, Metabotropic GlutamateSynaptophysin2-Amino-5-phosphonovalerateAxonsalpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic AcidNeural PathwaysCell Adhesion Molecules, NeuronalQuinoxalinesCerebellumOrgan Culture TechniquesEvoked PotentialsNerve NetVesicular Glutamate Transport Protein 2Motor NeuronsN-MethylaspartateCerebral CortexGlutamate DecarboxylaseMembrane ProteinsBicucullineMiniature Postsynaptic PotentialsMice, Inbred C57BLMice, KnockoutPicrotoxinMembrane PotentialsRats, WistarVesicular Inhibitory Amino Acid Transport ProteinsGreen Fluorescent ProteinsReceptors, PresynapticNerve FibersSynapsinsTime FactorsTetrodotoxinReceptors, GABA-ACalciumGABAergic NeuronsNeuromuscular JunctionDentate GyrusMossy Fibers, HippocampalMicroscopy, ImmunoelectronAmino Acid Transport System X-AGIntracellular Signaling Peptides and ProteinsCalcium-Calmodulin-Dependent Protein Kinase Type 2ThalamusCannabinoid Receptor ModulatorsReceptors, GABA-BNeural Cell Adhesion MoleculesImmunohistochemistryAfferent PathwaysMice, TransgenicProtein TransportBrainEndocannabinoidsPyridinium Compounds