Figure 3. Genetic similarity is greater within white matter tract classes than between tract classes.
When considering FA, estimated genetic correlation scores (rG) were significantly higher across white matter tract phenotypes within the same tract class compared to tracts from another class, within- and between- association, projection, and complex tracts were quantitatively compared (p<0.05). Violin plots are colored according to white matter tract class (within-tract comparisons are depicted in blue shades and between-tract comparisons are in gray) and show median as the thick black line; end points of the box mark 25th and 75th percentiles. Scatter plots show the relative spread of all pair-wise comparisons between tracts. Analyses of other diffusivity modalities are available in the supplement.