Transcutaneous Electric Nerve StimulationElectric Stimulation TherapyPain ManagementPeripheral NervesAcupuncture PointsPain MeasurementEar, ExternalMedical Device LegislationPainAcupuncture TherapyAcupuncturePain, PostoperativeElectric StimulationNerve BlockSciatic NerveSplenic ArteryElectroacupunctureWristSensory ThresholdsOptic NerveNerve FibersEvoked Potentials, SomatosensoryPain ThresholdPhysical Therapy ModalitiesElectrodesNerve RegenerationRandom AllocationTreatment OutcomeLegNerve EndingsSural NerveMedian NerveAnalgesicsLow Back PainFacial NerveNerve CrushPeripheral Nerve InjuriesStatistics, NonparametricTibial NerveExercise TherapyUlnar NerveFemoral NerveSpinal NervesMuscle ContractionTime FactorsNorepinephrineAnalysis of VarianceChronic DiseaseNerve Growth FactorTrigeminal NerveNerve Growth FactorsPhrenic NerveRadial NerveCombined Modality TherapyCranial NervesSpinal Nerve RootsNerve Compression SyndromesOphthalmic NerveNerve TissueMandibular NerveCochlear NerveSplanchnic Nerves