Septal NucleiCarpsOlfactory PathwaysSeptum PellucidumOlfactory BulbSeptum of BrainOlfactory Receptor NeuronsOlfactory NerveCholine O-AcetyltransferaseCell NucleusNeuronsSmellBrainOdorsProsencephalonNeural PathwaysRats, Inbred StrainsRats, Sprague-DawleyOlfactory Marker ProteinHippocampusRats, WistarBrain ChemistryReceptors, OdorantFearImmunohistochemistryOlfaction DisordersNucleus AccumbensMagnetic Resonance ImagingBehavior, AnimalEmotionsConditioning, ClassicalOlfactory Nerve InjuriesBrain MappingThalamic NucleiConditioning (Psychology)Facial ExpressionPrefrontal CortexRats, Long-EvansSolitary NucleusLimbic SystemMemoryRaphe NucleiVomeronasal OrganCochlear NucleusAvoidance LearningParaventricular Hypothalamic NucleusAnalysis of VarianceCaudate NucleusImage Processing, Computer-AssistedProto-Oncogene Proteins c-fosAssociation LearningEsthesioneuroblastoma, OlfactoryMicroinjectionsArcuate NucleusCerebellar NucleiFunctional LateralityElectric StimulationArthropod AntennaeActive Transport, Cell NucleusSensory Receptor CellsNerve NetFreezing Reaction, CatalepticMedial Collateral Ligament, KneeElectroshockAction PotentialsTime FactorsSynaptic TransmissionExtinction, PsychologicalCuesRewardEvoked PotentialsNasal CavityReaction TimeCerebral CortexPentanolsAxonsNeuronal PlasticityNeural InhibitionPhotic StimulationSuprachiasmatic NucleusMuscimolRed Nucleusgamma-Aminobutyric AcidAnimals, NewbornHypothalamusPreoptic AreaInterneuronsTemporal LobeMice, Inbred C57BLPonsSense OrgansTrigeminal NucleiAfferent PathwaysAnxietyOlivary NucleusBrain StemSynapses