Spinothalamic TractsNeuronsSpinocerebellar TractsPyramidal TractsNeurons, AfferentCatsMotor NeuronsSpinal CordAfferent PathwaysLumbosacral RegionAction PotentialsPhysical StimulationAxonsElectric StimulationMacaca fascicularisNeural InhibitionStilbamidinesMotor CortexHorseradish PeroxidaseExtrapyramidal TractsForelimbCerebellumNeural ConductionDendritesReticular FormationElectrophysiologyPruritusHindlimbSolitary NucleusNeural PathwaysSynapsesEvoked PotentialsThalamusMechanoreceptorsNociceptorsPosterior Horn CellsCapsaicinDopaminergic NeuronsUrinary Tract InfectionsHairReaction TimeLocomotionGABAergic NeuronsTime FactorsGastrointestinal TractMovementPatch-Clamp TechniquesSkinHippocampusUrinary TractCells, CulturedGanglia, SpinalSynaptic TransmissionSensory Receptor CellsBrain MappingNerve Tissue ProteinsOlfactory Receptor NeuronsCerebral CortexCholinergic Neuronsgamma-Aminobutyric AcidMusclesMembrane PotentialsNeurons, EfferentMotor Neuron DiseaseImmunohistochemistryAnimals, NewbornRespiratory Tract InfectionsModels, NeurologicalMedulla OblongataPyramidal CellsBrainExcitatory Postsynaptic PotentialsMesencephalonInterneuronsDopamineNeuropeptidesRats, WistarSerotonergic NeuronsGlutamic AcidBrain StemMice, Inbred C57BLTetrodotoxinTyrosine 3-MonooxygenaseMice, TransgenicGanglia, InvertebrateNerve NetCell CountNeuritesGangliaCalciumNitrergic NeuronsNeurogliaNeuronal PlasticityNeurogenesisAdrenergic NeuronsSubstantia NigraNerve DegenerationGanglia, SympatheticGreen Fluorescent ProteinsProsencephalon