Pyramidal TractsEvoked Potentials, MotorMotor CortexDiffusion Tensor ImagingElectromyographyAnisotropyTranscranial Magnetic StimulationSpinal CordDiffusion Magnetic Resonance ImagingSpinal Cord InjuriesMotor NeuronsInternal CapsuleAxonsNerve RegenerationWallerian DegenerationForelimbMovement DisordersSpastic Paraplegia, HereditaryVolitionElectric StimulationVoluntary ProgramsFunctional LateralityH-ReflexMovementMagneticsHandMuscle, SkeletalRecovery of FunctionEfferent PathwaysMotor SkillsNerve Fibers, MyelinatedPonsNeural PathwaysEphrin-B3ParesisMagnetic Resonance ImagingTegmentum MesencephaliMuscle ContractionAmyotrophic Lateral SclerosisArmHemiplegiaHand StrengthNervous System MalformationsExtrapyramidal TractsFingersBrainReceptor, EphA4Cerebral CortexCorpus CallosumPsychomotor PerformanceAnterior Horn CellsDextransStilbamidinesAxonal TransportReaction TimeNerve DegenerationMotor Neuron DiseaseNeural ConductionRed NucleusNeuronal PlasticityEcho-Planar ImagingBiotinIsometric ContractionSturge-Weber SyndromeMotor ActivityNerve FibersHemispherectomyThalamic DiseasesBrain InfarctionMyelin ProteinsImage Processing, Computer-AssistedSpinal Cord DiseasesMotor Skills DisordersFrontotemporal Lobar DegenerationStrokeMedulla OblongataNeurologic ExaminationGAP-43 ProteinInfarctionTime FactorsImaging, Three-DimensionalSomatosensory CortexBrain MappingLeukoencephalopathiesBrain Tissue TransplantationUrinary Tract InfectionsLocomotionMuscle FatigueCervical VertebraeBrain Injury, ChronicWheat Germ Agglutinin-Horseradish Peroxidase ConjugateWristInterneuronsAnalysis of VarianceMice, Neurologic MutantsLegBrain InjuriesBrain StemCatsEvoked Potentials