Pyridoxal KinaseFluorescence PolarizationAnisotropySpectrometry, FluorescenceDiffusion Tensor ImagingDiffusion Magnetic Resonance ImagingNerve Fibers, MyelinatedPositron-Emission TomographyOtoacoustic Emissions, SpontaneousCorpus CallosumTomography, Emission-ComputedBrainDiphenylhexatrieneImage Processing, Computer-AssistedVehicle EmissionsFluorodeoxyglucose F18Internal CapsuleRadiopharmaceuticalsFluorescent DyesTomography, Emission-Computed, Single-PhotonMagnetic Resonance ImagingMembrane FluidityDiffusion