Stereotaxic TechniquesAnatomy, ArtisticAtlases as TopicPainMedical IllustrationEntopeduncular NucleusBrainChronic PainPain ManagementPain ThresholdBrain MappingImaging, Three-DimensionalMagnetic Resonance ImagingPain, PostoperativeNeuronsLow Back PainBack PainAmygdalaPain MeasurementMicroinjectionsRats, Sprague-DawleyAbdominal PainNeck PainPain, IntractableCorpus StriatumThalamusPelvic PainPain PerceptionCerebral CortexFacial PainNeural PathwaysGenetic VectorsAcute PainBehavior, AnimalPain, ReferredImage Processing, Computer-AssistedBrain NeoplasmsGene Transfer TechniquesDisease Models, AnimalParkinson DiseaseShoulder Pain