Pain ThresholdPainPain PerceptionPain MeasurementChronic PainHyperalgesiaSensitivity and SpecificityNociceptive PainFearPain, PostoperativeCatechol O-MethyltransferaseVulvodyniaPain ManagementFibromyalgiaFacial PainHot TemperatureNociceptorsManipulation, SpinalAnalgesics, OpioidBehavior, AnimalHyperesthesiaNeuralgiaMusculoskeletal PainSomatosensory DisordersShoulder PainAnalgesicsLow Back PainBack PainThermosensingAnalgesiaNociceptionPressureCold TemperatureGTP CyclohydrolaseRats, Sprague-DawleyAbdominal PainAnxietyNeck PainPhysical StimulationPain, IntractableEmotionsOxycodoneNerve Fibers, UnmyelinatedArthralgiaAnalysis of VarianceThiazinesFacial ExpressionMorphineTemporomandibular Joint DisordersPelvic PainMagnetic Resonance ImagingReceptors, Opioid, muMusculoskeletal ManipulationsSex CharacteristicsAcute PainBrainPain, ReferredConditioning, ClassicalTime FactorsStress, PsychologicalGanglia, SpinalTRPV Cation ChannelsSpinal CordNaltrexoneConditioning (Psychology)Sensory Receptor CellsDisease Models, AnimalCapsaicinChronic DiseaseQuestionnairesSpinal StenosisPosterior Horn CellsPituitary-Adrenal SystemNeural PathwaysDose-Response Relationship, DrugBrain MappingAvoidance LearningDouble-Blind MethodPolymorphism, Single NucleotideMice, Inbred C57BLLimbic SystemStatistics as TopicMemoryRats, Long-EvansSeverity of Illness IndexFreezing Reaction, CatalepticImage Processing, Computer-AssistedPrefrontal CortexNeuronsProspective StudiesSex FactorsExtinction, PsychologicalMotor ActivityPhotic StimulationElectroshockReproducibility of ResultsFunctional LateralityContrast SensitivityMice, KnockoutCase-Control Studies