Table 2. MNI coordinates of regions with decreased FA and increased RD in OCD group relative to HCs.
| Variable | TFCE FWE-correlate P |
MNI coordinates |
Voxel size | Tract(s) within clusters | ||
|---|---|---|---|---|---|---|
| x | y | z | ||||
| FA | ||||||
| Cluster 1 | <0.05 | 127 | 115 | 104 | 76 | Left of superior longitudina fasciculus |
| Cluster 2 | <0.005 | 85 | 146 | 88 | 6357 | Splenium, body and genu of CC (including left of anterior and superior corona radiata) |
| RD | ||||||
| Cluster 1 | <0.02 | 85 | 146 | 89 | 1543 | Body and genu of CC |
Abbreviations: CC, corpus callosum; FA, fractional anisotropy; FWE, family-wise error rate; HC, healthy control; MNI, Montreal Neurological Institute atlas; OCD, obsessive-compulsive disorder; RD, radial diffusivity; TFCE, threshold-free cluster enhancement.
P=0.05.