Figure 3.

Associations between cross-sectional depressive symptoms and diffusion magnetic resonance imaging (heatmap) and the map for significant regions (brain map). For the heatmap, color depth represents the standard effect size of a measure. Because fractional anisotropy (FA) has a negative direction with mean diffusivity (MD) here in this figure, the effect sizes for FA are reversed (× −1). The results are separated into two sections. The upper sections show the results for g measures, and the lower sections show the results for individual tracts. To aid comprehension, in the lower part where results of tracts are shown, checks are divided into 3 categories by dashed lines because the tracts are in different subsets (i.e., association fibers, thalamic radiations, and projection fibers (see Methods and Materials). Significant associations after false discovery rate correction (p_corr < .05) are marked with an asterisk. For the brain map, significant tracts are shown in red for the ones associated with cross-sectional measure, yellow for the ones associated with longitudinal slope, blue if associated with the mean, and light green if associated with variability. gTotal, general variance over all tracts; gAF, general variance for tract subset of association/commissural fibers; gTR, general variance for thalamic radiation; gPF, general variance for projection fibers.