Table 2.
Group comparision of diffusion coefficients in major white matter tracts.
| Major tract | NC mean FA (SD) | RBD mean FA (SD) |
Tract-wise corrected P* |
NC mean MD(SD) |
RBD mean MD (SD) |
Tract-wise corrected P* |
|---|---|---|---|---|---|---|
| LH ATR | 0.2547 (0.0345) | 0.2428 (0.0396) | ns | 1.1 (0.2574) |
1.2 (0.2144) |
0.0359 |
| LH CST | 0.4110 (0.0264) | 0.4024 (0.0247) | ns | 0.9 (0.2557) |
0.9 (0.2497) |
ns |
| LH CG | 0.3332 (0.0346) | 0.3329 (0.0302) | ns | 0.9 (0.1477) |
0.9 (0.1936) |
ns |
| LH IF-OF | 0.2209 (0.0341) | 0.2189 (0.0358) | ns | 1.1 (0.2150) |
1.1 (0.1759) |
ns |
| LH ILF | 0.1604 (0.0157) | 0.1830 (0.0128) | ns | 0.9 (0.1116) |
1.0 (0.1120) |
ns |
| LH SLF | 0.2780 (0.0401) | 0.2839 (0.0338) | ns | 1.1 (0.1935) |
1.1 (0.2248) |
ns |
| LH UNC | 0.1552 (0.0114) | 0.1623 (0.0198) | ns | 1.1 (0.1534) |
1.1 (0.1560) |
ns |
| RH ATR | 0.3282 (0.0294) | 0.3150 (0.0327) | 0.0413 | 0.8 (0.1935) |
0.8 (0.1026) |
0.0028 |
| RH CST | 0.3648 (0.0272) | 0.3497 (0.0262) | ns | 1.1 (0.3018) |
1.0 (0.2420) |
ns |
| RH CG | 0.2344 (0.0145) | 0.2462 (0.0165) | ns | 0.8 (0.6291) |
0.8 (0.3623) |
ns |
| RH IF-OF | 0.2363 (0.0341) | 0.2452 (0.0313) | ns | 1.0 (0.1405) |
1.1 (0.1899) |
0.0095 |
| RH ILF | 0.2446 (0.0306) | 0.2811 (0.0220) | ns | 0.9 (0.1152) |
0.9 (0.7938) |
ns |
| RH SLF | 0.2573 (0.0239) | 0.2460 (0.0152) | ns | 0.9 (0.9875) |
0.9 (0.8616) |
ns |
| RH UNC | 0.1668 (0.0258) | 0.1555 (0.0185) | ns | 1.2 (0.2421) |
1.3 (0.2234) |
ns |
*The lowest p-value FA, fractional anisotropy; SD, standard deviation; MD, mean diffusivity; LH, left hemisphere; RH, right hemisphere; ATR, anterior thalamic radiation; CST, corticospinal tract; CG, cingulum; IF-OF, inferior fronto-occipital fasciculus; ILF, inferior-longitudinal fasciculus; SLF, superior-longitudinal fasciculus; UNC, uncinate fasciculus; ns, not significant.