FIG 3. Representative spectra from 1-cm³ voxels from three regions in the brain of a premature (postconceptional age, 30 weeks) and a term (postconceptional age, 40 weeks) neonate. Note higher relative N-acetylaspartate levels in the thalamus and especially the basal ganglia of the term infant. Note also a similar metabolite pattern in the frontal white matter, which is consistent with later maturation of this region