ArousalSleep Arousal DisordersFearEmotionsFacial ExpressionEroticaConditioning, ClassicalMagnetic Resonance ImagingSleep StagesSleepGalvanic Skin ResponseConditioning (Psychology)LibidoHibernationNeural PathwaysBehavior, AnimalBrain MappingElectroencephalographyWakefulnessMemoryPolysomnographyBrainAvoidance LearningAnalysis of VarianceLimbic SystemAnxietySleep, REMPrefrontal CortexRats, Long-EvansRats, Sprague-DawleyPhotic StimulationElectroshockFreezing Reaction, CatalepticAffectExtinction, PsychologicalStartle ReactionSeptal NucleiImage Processing, Computer-AssistedFunctional LateralityOrgasmAcoustic StimulationHippocampusReaction TimeStress, PsychologicalAssociation LearningCorticotropin-Releasing HormoneRewardProto-Oncogene Proteins c-fosCerebral CortexPhotoplethysmographyExploratory BehaviorCuesHabituation, PsychophysiologicNeuronsKindling, NeurologicNeuropeptidesNerve NetMicroinjectionsIbotenic AcidPattern Recognition, VisualSomnambulismGyrus CinguliRecognition (Psychology)ThalamusSciuridaeMuscimolHypothalamusLocus CoeruleusFaceSleep Apnea SyndromesHypothalamic Area, LateralOxygenSleep Apnea, ObstructiveSexual Dysfunctions, PsychologicalElectrooculographyLipoid Proteinosis of Urbach and WietheSubliminal StimulationFunctional NeuroimagingNeuronal PlasticityTime FactorsNeuropsychological TestsAttentionEvoked PotentialsParasomniasSocial BehaviorRespiratory RateReceptors, Corticotropin-Releasing HormoneHeart RateSleep DeprivationSynaptic TransmissionAngerMaze LearningElectric StimulationReceptors, Neuropeptidegamma-Aminobutyric AcidEstivationOncogene Proteins v-fosDominance, CerebralSex CharacteristicsCorticosterone