Autonomic Nerve BlockAnesthesia, EpiduralStellate GanglionComplex Regional Pain SyndromesSympatholyticsForeheadSkin TemperatureSympathectomy, ChemicalSympathectomySympathetic Nervous SystemLidocaineHeart RateAtropineBlood PressureSciatic NerveNerve BlockPeripheral NervesNerve FibersOptic NerveNerve RegenerationNerve EndingsMedian NerveSural NerveFacial NervePeripheral Nerve InjuriesUlnar NerveNerve CrushTibial NerveHeart BlockFemoral NerveSpinal NervesNerve Growth FactorTrigeminal NervePhrenic NerveNerve Growth FactorsRadial NerveSpinal Nerve RootsCranial NervesNerve Compression SyndromesMandibular NerveOphthalmic NerveNerve TissueNeuromuscular BlockadeSplanchnic NervesNeural ConductionCochlear NerveRats, Sprague-DawleyElectric StimulationGlossopharyngeal NerveNerve Fibers, MyelinatedThoracic NervesOptic Nerve InjuriesOptic Nerve DiseasesAxonsAnesthetics, LocalAccessory NerveRecurrent Laryngeal NerveOculomotor NerveFacial Nerve InjuriesAbducens NerveCranial Nerve NeoplasmsFacial Nerve DiseasesDose-Response Relationship, DrugLingual NerveOlfactory NerveHypoglossal NerveNerve DegenerationAction PotentialsNerve Tissue ProteinsNeurons, Afferent