Nerve Fibers, UnmyelinatedNerve FibersAxonsNerve Fibers, MyelinatedNeural ConductionMyelin SheathSchwann CellsSciatic NervePeripheral NervesSural NerveSpinal Nerve RootsNeurons, AfferentOptic NerveMicroscopy, ElectronGanglia, SpinalElectric StimulationAction PotentialsNociceptorsRats, Sprague-DawleyNerve RegenerationCorpus CallosumAfferent PathwaysSodium ChannelsNeuronsNerve EndingsWallerian DegenerationMechanoreceptorsCapsaicinSensory Receptor CellsMicroscopy, ImmunoelectronCatsOphthalmic NerveCell CountAdrenergic FibersPeripheral Nervous System DiseasesAnimals, NewbornPhysical StimulationRetinal Ganglion CellsPeripheral Nerve InjuriesNeurons, EfferentRanvier's NodesTrigeminal NerveSpinal NervesSkinNerve BlockUbiquitin ThiolesteraseCalcitonin Gene-Related PeptideNerve DegenerationDiabetic NeuropathiesNeuronal Tract-TracersNeurofilament ProteinsPeripheral Nervous SystemSpinal CordPeroneal NerveContactin 1Optic Nerve DiseasesSubstance PMice, Neurologic MutantsCantharidinAxonal TransportNerve Growth FactorsDietary FiberMuscle Fibers, SkeletalChronaxyOptic DiskCochlear NerveTrochlear NerveMotor NeuronsImmunohistochemistryNAV1.6 Voltage-Gated Sodium ChannelMicroscopy, Electron, TransmissionNerve CrushTomography, Optical CoherenceTibial NervePainSensationAxotomyAutonomic Fibers, PreganglionicNerve Tissue ProteinsSympathetic Nervous SystemReflexMustard PlantFacial NerveMedian NerveDenervationElectrophysiologyTetrodotoxinMononeuropathiesUlnar NerveVagus NerveThermosensingHot TemperatureTRPV Cation ChannelsRats, WistarHistocytochemistryLidocaineSensory ThresholdsHyperalgesiaMineral FibersGlaucoma