Receptors, PresynapticPresynaptic TerminalsSerotoninSynaptic TransmissionReceptor, Serotonin, 5-HT2ANeurotransmitter AgentsSynapsesReceptor, Serotonin, 5-HT1AElectric StimulationNeural InhibitionExcitatory Postsynaptic PotentialsReceptors, SerotoninGlutamic AcidReceptor, Serotonin, 5-HT1BReceptors, Serotonin, 5-HT1NorepinephrineReceptor, Serotonin, 5-HT2CSerotonin Plasma Membrane Transport ProteinsSerotonin AntagonistsPatch-Clamp TechniquesReceptors, Serotonin, 5-HT3NeuronsHippocampusSerotonin Uptake InhibitorsSerotonin Receptor AgonistsSerotonin 5-HT2 Receptor AntagonistsRats, Sprague-DawleyRats, WistarSerotonin 5-HT1 Receptor AgonistsSerotonin AgentsSerotonin 5-HT2 Receptor AgonistsReceptors, Serotonin, 5-HT2Receptor, Serotonin, 5-HT2BSerotonin 5-HT1 Receptor AntagonistsSerotonin SyndromeReceptor, Serotonin, 5-HT1DTryptophan HydroxylaseSynaptic VesiclesSerotonin 5-HT3 Receptor AntagonistsReceptors, Serotonin, 5-HT4Ketanserin8-Hydroxy-2-(di-n-propylamino)tetralinRaphe NucleiHydroxyindoleacetic AcidHT29 CellsNeuromuscular JunctionFluoxetinegamma-Aminobutyric AcidGenes, sisAction PotentialsSerotonergic Neurons5-HydroxytryptophanNerve Tissue ProteinsCitalopramSynaptosomesDopamineCalciumSerotonin 5-HT3 Receptor AgonistsSerotonin 5-HT4 Receptor AgonistsMethysergideReceptors, GABA-BSerotonin 5-HT4 Receptor AntagonistsAutoreceptorsElectrophysiologyParoxetineSynaptic MembranesExcitatory Amino Acid AntagonistsFenclonineNerve EndingsInterneuronsBrainDose-Response Relationship, DrugSynaptophysinSynapsinsMossy Fibers, HippocampalInhibitory Postsynaptic PotentialsMotor NeuronsBaclofenLong-Term PotentiationGABA AntagonistsMembrane PotentialsBiogenic MonoaminesAnimals, NewbornBrain StemNeurons, AfferentTetrodotoxinAxonsPyramidal Cells5,7-DihydroxytryptamineCalcium Channels, N-TypeSynaptic PotentialsAstacoideaTime FactorsAmphetaminesPyridinium CompoundsReceptors, Metabotropic GlutamateFenfluramineBehavior, AnimalPiperazinesDendrites