Spinal Cord StimulationSpinal Cord InjuriesSpinal CordElectric Stimulation TherapyFailed Back Surgery SyndromeParesthesiaElectrodes, ImplantedPain, IntractableEpidural SpacePain ManagementParaplegiaElectric StimulationCervical VertebraeNeuralgiaIntercostal MusclesSpinal Cord DiseasesQuadriplegiaImplantable NeurostimulatorsThoracic VertebraeSpinal Cord CompressionReflex Sympathetic DystrophyTranscutaneous Electric Nerve StimulationSpinal Cord NeoplasmsBlood Gas Monitoring, TranscutaneousLocomotionRecovery of FunctionComplex Regional Pain SyndromesSpinal Cord IschemiaAngina PectorisChronic PainPain MeasurementQuipazineEvoked Potentials, SomatosensoryPainInjections, SpinalPulsed Radiofrequency TreatmentSpinal Cord RegenerationNerve RegenerationTreatment OutcomeDecerebrate StateMotor NeuronsRats, Sprague-DawleyRespiratory MusclesAutonomic DysreflexiaTime FactorsParalysisIschemiaLegSpinal Nerve RootsElectrodesUrinary Bladder, NeurogenicSpinal NervesSpinal InjuriesChronic DiseaseWounds and InjuriesWheelchairsAxonsPostureContusionsDisease Models, AnimalLaminectomyMyelitisBack PainMuscle SpasticitySpinal CanalPosterior Horn CellsLumbosacral RegionCordotomySpinal NeoplasmsPhysical StimulationElectromyographyAnesthesia, SpinalMotor ActivityPressure UlcerBrain InjuriesNeuronsInjury Severity ScorePyramidal TractsGanglia, SpinalDogsReflexSpinal DiseasesAnterior Horn CellsRegional Blood FlowUmbilical CordSympathetic Nervous SystemHindlimbFollow-Up StudiesSpinal StenosisSpinal FusionHyperalgesiaAthletic InjuriesRetrospective StudiesAfferent PathwaysChondroitin ABC LyaseMyelin SheathNeuronal PlasticityProspective StudiesMyelographySpasm