Fig. 2.

Magnitude of DTI parameter changes as a function of age. The age of (A) peak fractional anisotropy, FA; and (B) minimum mean diffusivity, MD. For each tract, the location of the black vertical line represents the age at peak FA or minimum MD. The gray bar to each side represents the standard error of the age estimate (based on the standard error of the fitting parameters). The color of the bars represents the magnitude of change from 5 years to the peak/minimum (left) and from the peak/minimum to 83 years (right). Note that the age scale is different for FA and MD, but the color bar is the same. Of note, the uncinate peaks in the early to mid 30's. ILF: inferior longitudinal fasciculus; IFO: inferior fronto-occipital fasciculus; SFO: superior fronto-occipital fasciculus; SLF: superior longitudinal fasciculus; ALIC: anterior limb of the internal capsule; CC: corpus callosum (Lebel et al., 2012). Used with permission.