Figure 3.

Association fiber trajectories for MT, R1, R2*, and g‐ratio. Scatterplots indicate the tract microstructure measurement distribution across the sample with age; black lines denote the aging regression line for quadratic (MT, R1, g‐ratio) or Poisson curve (R2*) models (gray shading 95% CI). Red: MT; orange: R1; green: R2*; turquoise: g‐ratio. ARC = arcuate fasciculus; CingC = cingulum‐cingulate; CingH = cingulum‐hippocampus; CST = corticospinal tract; IFOF = inferior fronto‐occipital fasciculus; ILF = inferior longitudinal fasciculus; SLF = superior longitudinal fasciculus; TR = thalamic radiations; UNC = uncinate fasciculus [Color figure can be viewed at http://wileyonlinelibrary.com]