Table 3.

Clusters of fractional anisotropy reductions in all patients with TS relative to HCs.

Region	MNI coordinates	SDM	p-value	No. voxels	Cluster breakdown
	x, y, z	Z-value	uncorrected		(voxels)
Corpus callosum	−10, −24, 26	−1.573	<0.001	114	Corpus callosum (114)
Right inferior network, inferior longitudinal fasciculus	40, −76, −2	−1.594	<0.001	27	Right inferior longitudinal fasciculus (19); right middle occipital gyrus, BA 19 (6); right inferior occipital gyrus, BA 19 (1) (undefined), BA 19 (1)

TS, Tourette syndrome; HCs, healthy controls; MNI, Montreal Neurological Institute; SDM, signed differential mapping; No., number; BA, Brodmann area.