Dominance-SubordinationStress, PsychologicalHelplessness, LearnedImmobility Response, TonicSocial DominanceSocial BehaviorTerritorialityMesocricetusConditioning (Psychology)AggressionBehavior, AnimalMuscimolRats, Long-EvansSocial AlienationRaphe NucleiGABA-A Receptor AgonistsAnhedoniaSerotonin 5-HT1 Receptor AgonistsNeurastheniaCorticosteroneAnalysis of VarianceReceptor, Serotonin, 5-HT1AEscape ReactionLimbic SystemHierarchy, SocialExploratory BehaviorVentral Tegmental AreaResilience, PsychologicalAgonistic BehaviorCricetinaeSerotonergic NeuronsProto-Oncogene Proteins c-fosPrefrontal CortexGonadal HormonesLobbyingConditioning, ClassicalFearAnxietyTryptophan HydroxylaseSerotonin 5-HT1 Receptor AntagonistsHandling (Psychology)Septal NucleiAmphetamineNucleus AccumbensDisease Models, AnimalReceptor, Serotonin, 5-HT2AIndividualityReceptors, Corticotropin-Releasing HormonePair BondAmygdalaAdaptation, PsychologicalMotor ActivitySocial EnvironmentCompetitive BehaviorReceptor, Serotonin, 5-HT2CPeromyscusDepressionBenzazepinesBrain-Derived Neurotrophic FactorMice, Inbred C57BLSerotonin Receptor AgonistsDopaminePituitary-Adrenal SystemFluoxetineRats, Sprague-DawleyHypothalamo-Hypophyseal SystemSwimmingCentral Nervous System StimulantsAnti-Anxiety AgentsBiogenic MonoaminesInterpersonal RelationsPiperazines3,4-Dihydroxyphenylacetic AcidBrainStereotaxic TechniquesCocaineSerotoninHomovanillic AcidAssociation LearningRewardMaze LearningSelf AdministrationTimeAntimetabolitesBehavior, AddictiveCocaine-Related DisordersGene Expression RegulationNeural PathwaysTime FactorsMicroinjectionsRNA, MessengerAntidepressive AgentsPiperidinesReceptors, Opioid, muNeuronsGlucocorticoidsHippocampusMice, Inbred ICRChronic DiseaseSerotonin Antagonists