CerebellumPurkinje CellsCerebellar CortexCerebellar DiseasesBrainCerebellar NucleiMice, Neurologic MutantsCerebellar AtaxiaMagnetic Resonance ImagingNeuronsCerebellar NeoplasmsConditioning, EyelidNerve Tissue ProteinsBrain MappingBrain StemCerebral CortexOlivary NucleusBrain ChemistryAtaxiaPonsAnimals, NewbornNeural PathwaysTissue DistributionNerve FibersBlinkingMedulloblastomaS100 Calcium Binding Protein GCalbindinsIn Situ HybridizationBasal GangliaImage Processing, Computer-AssistedNeurogliaTomography, Emission-ComputedGene Expression Regulation, DevelopmentalPsychomotor PerformanceMesencephalonImmunohistochemistryMovementSpinocerebellar DegenerationsOrgan SpecificityMice, Inbred C57BLSynapsesSpinocerebellar AtaxiasRats, Sprague-DawleyFunctional LateralityRats, WistarRNA, MessengerMice, TransgenicHippocampusDendritesCentral Nervous SystemAutoradiographyCerebrumThalamusNerve NetAxonsRhombencephalonMice, KnockoutMolecular Sequence DataTime FactorsReflex, Vestibulo-OcularMetencephalonDiencephalonPositron-Emission TomographySpinocerebellar TractsGlial Fibrillary Acidic ProteinMotor CortexMuscimolElectric StimulationNeuronal PlasticityLearningCerebrovascular CirculationGait AtaxiaSpinal CordMotor SkillsAtrophyAstrocytesgamma-Aminobutyric AcidAgingFrontal LobeNeuroanatomyAction PotentialsReceptors, GlutamateModels, NeurologicalMotor ActivityCatsTelencephalonCarbon RadioisotopesRats, Inbred Strains