Escape ReactionElectroshockAvoidance LearningIllness BehaviorStress, PsychologicalDepressionCatastrophizationDominance-SubordinationBehavior, AnimalAdaptation, PsychologicalEmotionsExploratory BehaviorAntidepressive Agents, TricyclicHelplessness, LearnedFluoxetineCorticosteroneAnalysis of VarianceAntidepressive Agents, Second-GenerationFearPainMotor ActivityDepressive DisorderAnxietyAntidepressive AgentsQuestionnairesDisease Models, AnimalSwimmingSelf ConceptRats, Sprague-DawleyReaction TimeBrain-Derived Neurotrophic FactorDisability EvaluationStress Disorders, Post-TraumaticHippocampusSex CharacteristicsStress, PhysiologicalSelf ReportQuality of LifeSeverity of Illness IndexLongitudinal Studies