Neuronal PlasticityLong-Term PotentiationSynapsesGABA AntagonistsHippocampusSynaptic TransmissionReceptors, N-Methyl-D-AspartateGABA AgonistsInterleukin 1 Receptor Antagonist ProteinExcitatory Postsynaptic PotentialsNeuronsRats, Sprague-DawleyLong-Term Synaptic DepressionExcitatory Amino Acid Antagonistsgamma-Aminobutyric AcidNeurokinin-1 Receptor AntagonistsElectric StimulationReceptors, AMPAGABA AgentsReceptors, GABA-APiperidinesDendritic SpinesRats, WistarGABA-A Receptor AntagonistsPatch-Clamp TechniquesMemoryDose-Response Relationship, DrugLearningGABA ModulatorsPurinergic P1 Receptor AntagonistsDopamine AntagonistsNeural InhibitionHistamine H2 AntagonistsSerotonin 5-HT3 Receptor AntagonistsBehavior, AnimalDendritesReceptors, GABA-BBicuculline2-Amino-5-phosphonovalerateAngiotensin Receptor AntagonistsGlutamic AcidPyramidal CellsElectrophysiologyMice, Inbred C57BLMaze LearningCA1 Region, HippocampalAdenosine A2 Receptor AntagonistsSerotonin 5-HT2 Receptor AntagonistsHormone AntagonistsReceptors, Metabotropic GlutamatePresynaptic TerminalsAction PotentialsBrain-Derived Neurotrophic FactorTime FactorsGABA Plasma Membrane Transport ProteinsCells, CulturedMice, KnockoutModels, NeurologicalAdenosine A1 Receptor AntagonistsMuscarinic AntagonistsN-MethylaspartateBrainGABA-B Receptor AntagonistsAnimals, NewbornDizocilpine MaleateNarcotic AntagonistsFearPurinergic P2 Receptor AntagonistsPicrotoxinNerve Tissue ProteinsOrgan Culture TechniquesCalciumDentate GyrusSignal TransductionHistamine H1 AntagonistsAmygdalaReceptors, EndothelinQuinoxalinesCalcium-Calmodulin-Dependent Protein Kinase Type 2Analysis of VarianceReceptor, Cannabinoid, CB1Serotonin AntagonistsCerebral CortexConditioning (Psychology)BaclofenReceptors, SerotoninReceptors, GlutamateDrug InteractionsDisease Models, AnimalExcitatory Amino Acid AgonistsSerotoninHistamine AntagonistsMuscimolSynaptic PotentialsRats, Long-EvansDopamineNeural PathwaysNeurotransmitter Agents6-Cyano-7-nitroquinoxaline-2,3-dionePhosphinic Acids