Electric StimulationElectric Stimulation TherapyCatsMuscle ContractionTranscutaneous Electric Nerve StimulationPhysical StimulationElectrodes, ImplantedStimulation, ChemicalDeep Brain StimulationEvoked PotentialsReflexAction PotentialsVagus NerveMuscle, SkeletalElectromyographyElectrodesRats, Sprague-DawleyTime FactorsTranscranial Magnetic StimulationAfferent PathwaysNeurons, AfferentDecerebrate StateNeuronsMotor NeuronsSpinal CordSynaptic TransmissionElectrophysiologyNeurons, EfferentMicroelectrodesEvoked Potentials, SomatosensoryNeural InhibitionNorepinephrineMusclesAtropineSympathetic Nervous SystemGuanethidineCells, CulturedRats, WistarGuinea PigsSpinal Cord InjuriesNeural ConductionCalciumEvoked Potentials, MotorHindlimbNeural PathwaysEfferent PathwaysMotor CortexDogsIsometric ContractionMedulla OblongataParasympathetic Nervous SystemMuscle FatigueSplanchnic NervesReaction TimeNerve FibersRats, Inbred StrainsSelf StimulationTibial NervePeroneal NerveHexamethonium CompoundsPhentolamineSynapsesRabbitsDose-Response Relationship, DrugAcoustic StimulationMovementPeripheral NervesMuscle, SmoothPhotic StimulationSpinal Nerve RootsReticular FormationMechanoreceptorsTetrodotoxinCerebral CortexAcetylcholineParaplegiaFunctional LateralityPhrenic NerveLaryngeal NervesBrain StemTrigeminal NerveAutonomic Fibers, PostganglionicSignal TransductionGastroparesisPonsAcupuncture PointsMembrane PotentialsPyramidal TractsSomatosensory CortexCochlear ImplantsQuadriplegiaNociceptorsThalamusExcitatory Postsynaptic PotentialsAnalysis of VarianceParesisNeuronal PlasticityTorqueHeart RateHemiplegia