FearEmotionsRodentiaRodent DiseasesFacial ExpressionConditioning, ClassicalMagnetic Resonance ImagingConditioning (Psychology)Behavior, AnimalRats, Sprague-DawleyNeural PathwaysBrain MappingRats, Long-EvansLimbic SystemAvoidance LearningMemoryFreezing Reaction, CatalepticBrainPrefrontal CortexExtinction, PsychologicalElectroshockNeuronsAnxietyHippocampusAnalysis of VarianceSeptal NucleiImage Processing, Computer-AssistedFunctional LateralityAssociation LearningKindling, NeurologicIbotenic AcidProto-Oncogene Proteins c-fosRewardCorticotropin-Releasing HormoneStartle ReactionPhotic StimulationMicroinjectionsExploratory BehaviorArousalCuesRats, WistarLipoid Proteinosis of Urbach and WietheFunctional NeuroimagingMuscimolNeuronal PlasticityNerve NetDisease Models, AnimalPattern Recognition, VisualReaction TimeAcoustic StimulationFaceStress, PsychologicalMaze LearningGyrus CinguliConditioning, OperantCerebral CortexReceptors, Corticotropin-Releasing HormoneNeuronal Tract-TracersArvicolinaeSocial BehaviorMice, Inbred C57BLLong-Term PotentiationCorticosteronegamma-Aminobutyric AcidSocial PerceptionAffectSynaptic TransmissionOncogene Proteins v-fosDominance, CerebralGalvanic Skin ResponseAnti-Anxiety AgentsRodent ControlHappinessThalamusElectric StimulationNeuropsychological TestsRestraint, PhysicalRecognition (Psychology)Time FactorsOlfactory PathwaysSubliminal StimulationMurinaeLearningReceptors, N-Methyl-D-AspartateTasteTemporal LobeSubstance Withdrawal SyndromeHypothalamusNucleus AccumbensReinforcement (Psychology)Sex CharacteristicsExcitatory Amino Acid AntagonistsMacaca mulattaOxygenAngerRetention (Psychology)Habituation, PsychophysiologicSerotonin Plasma Membrane Transport ProteinsEvoked PotentialsImmunohistochemistry