Regions with significantly lower fractional anisotropy (FA) in MMT vs. NC.

<p>All reported brain images were acquired using the “tbss_fill” script from the FSL package. The mean group FA skeleton (green) was overlaid on the mean_whole_group_FA images in axial, sagittal, and coronal views. The threshold of the mean FA skeleton was set at 0.2. Regions with significantly lower FA in MMT vs. NC were highlighted on the mean FA skeleton in colored voxels (scale range, from red to yellow). The resulting statistical maps were calculated and corrected for multiple comparisons with cluster-forming threshold t>3 and cluster-wise significance level corrected <i>p</i><0.05. BA, Brodmann area; IFO, inferior fronto-occipital fasciculus; ILF, inferior longitudinal fasciculus; L, left; MCP, middle cerebellar peduncle; R, right; SLF, superior longitudinal fasciculus; UF, uncinate fasciculus.