Brain DiseasesAtrophyBrainMuscular AtrophyBrain Diseases, Metabolic, InbornMagnetic Resonance ImagingEncephalitisMucopolysaccharidosis IAlzheimer DiseaseLeukoencephalopathiesBrain Diseases, MetabolicBrain ChemistryOptic AtrophyBlood-Brain BarrierNeuronsMuscular Atrophy, SpinalBrain InjuriesNeural Stem CellsBrain NeoplasmsAstrocytesMultiple System AtrophyBrain MappingDisease Models, AnimalSchizophreniaHippocampusImage Processing, Computer-AssistedAgingMicrogliaSpinal Muscular Atrophies of ChildhoodMice, Inbred C57BLRats, Sprague-DawleyMental DisordersOlivopontocerebellar AtrophiesImmunohistochemistryCells, CulturedBrain StemMagnetic Resonance SpectroscopyBiological MarkersBrain EdemaGyrate AtrophyBrain IschemiaGeographic AtrophyBrain AbscessCerebral CortexSurvival of Motor Neuron 1 ProteinMuscular Disorders, AtrophicOptic Atrophy, Autosomal DominantSMN Complex ProteinsNerve Tissue ProteinsHypoxia, BrainHindlimb SuspensionSurvival of Motor Neuron 2 ProteinBrain Damage, ChronicMuscle, SkeletalBrain InfarctionOrgan SizeTime Factors