Spinal CordSpinal Cord InjuriesCervical VertebraePressureSpinal Cord DiseasesSpinal Cord CompressionSpinal Cord NeoplasmsSpinal CanalBlood PressureHydrostatic PressureSpinal Nerve RootsQuadriplegiaSpinal NervesInjections, SpinalMotor NeuronsSpinal InjuriesPhrenic NerveSpinal Cord IschemiaSciatic NerveNerve RegenerationSpinal StenosisLaminectomyPeripheral NervesSpinal DiseasesSpinal NeoplasmsAnesthesia, SpinalMyelitisRats, Sprague-DawleyAnterior Horn CellsRecovery of FunctionMyelographyParaplegiaSpinal FusionParalysisNerve FibersAxonsForelimbThoracic VertebraeMagnetic Resonance ImagingSpondylosisPosterior Horn CellsSpinal Cord RegenerationSpinal Cord StimulationOptic NerveElectric StimulationGanglia, SpinalTime FactorsNeckDisease Models, AnimalContusionsNerve TissueElectromyographyPyramidal TractsLocomotionReflexAfferent PathwaysLumbosacral RegionMuscular Atrophy, SpinalElectric Stimulation TherapyAtmospheric PressurePeripheral Nerve InjuriesCatsRespiratory ParalysisTibial NerveDecompression, SurgicalEpidural SpaceNeurons, AfferentBlood Pressure DeterminationNerve Fibers, MyelinatedBrain StemLongitudinal LigamentsNeuronsNerve BlockPainNeck InjuriesNeural ConductionNerve CrushHypertensionIntraocular PressureSural NerveHyperalgesiaTransducers, PressureMedulla OblongataSyringomyeliaNerve EndingsRed NucleusDura MaterCordotomyNeuralgiaAutonomic DysreflexiaSpineTrigeminal Nucleus, SpinalIntracranial PressureUmbilical CordMedian NerveEfferent PathwaysEpidural AbscessMotor ActivityAir PressureTreatment Outcome