Motor NeuronsAxonsMotor CortexEvoked Potentials, MotorMotor ActivityGrowth ConesNerve RegenerationFasciculationSpinal CordTrochlear NerveMolecular Motor ProteinsNeuromuscular JunctionNeural ConductionSemaphorinsMusclesEfferent PathwaysAxonal TransportSemaphorin-3ANerve Tissue ProteinsZebrafishNeurons, AfferentChick EmbryoPeripheral NervesAction PotentialsElectric StimulationCranial NervesMedian NerveSpinal Nerve RootsMotor Skills DisordersMuscle DenervationElectromyographyAstacoideaMovementSynapsesGene Expression Regulation, DevelopmentalRhombencephalonMuscle, SkeletalNeuronsEphrinsEphrin-A5HindlimbTibial NerveNeuropilin-1Nerve EndingsAnimals, Genetically ModifiedNeuropilin-2Muscle ContractionSchwann CellsDrosophilaReceptors, Eph FamilyFemoral NerveNerve CrushCentral Nervous SystemZebrafish ProteinsEmbryo, NonmammalianNervous SystemCatsSensory Receptor CellsDrosophila ProteinsMyelin SheathNerve Growth FactorsPeroneal NerveReceptor, EphA4Neural PathwaysSciatic NerveExtremitiesLumbosacral PlexusTime FactorsNeuritesPeripheral Nervous SystemMutationKinesinDecapodiformesPsychomotor PerformanceElectrophysiologyMuscular Atrophy, SpinalSurvival of Motor Neuron 2 ProteinInterneuronsReceptor, EphA3ForelimbHorseradish PeroxidaseTectum MesencephaliNerve TissueAmyotrophic Lateral SclerosisMuscle SpindlesOculomotor NerveSpinal NervesPresynaptic TerminalsNeurons, EfferentReceptors, CholinergicSynaptic TransmissionEvoked PotentialsImmunohistochemistryModels, NeurologicalMice, TransgenicAgrinGanglia, SpinalSurvival of Motor Neuron 1 ProteinNeurogenesisNerve Degeneration