Stellate GanglionAutonomic Nerve BlockMepivacaineGanglia, SympatheticGanglia, AutonomicDecapodiformesGangliaGanglionectomyInjectionsReflex Sympathetic DystrophySympathetic Nervous SystemRetinal Ganglion CellsGanglia, SpinalVagus NerveBasal GangliaAdrenergic FibersElectric StimulationSympathectomySympathetic Fibers, PostganglionicDogsAutonomic Fibers, PreganglionicHorner SyndromeTrigeminal GanglionTachycardia, Ectopic AtrialTibial NerveNerve BlockHeartAutonomic Nervous SystemGanglia, ParasympatheticTachycardia, ParoxysmalGanglia, SensoryAnesthetics, LocalNorepinephrineBupivacaineNeuronsHeart Rate