Comparison of diffusion characteristics between neurologically intact control subjects and those with chronic SCI across upper cervical segments (C1–C3)
| Diffusion Metric/Level | Control | Chronic SCI | P Value* |
|---|---|---|---|
| λl (10−3 mm2/s) | |||
| C1 | 1.28 ± 0.07 | 0.99 ± 0.09 | .006 |
| C2 | 1.48 ± 0.04 | 1.10 ± 0.08 | <.001 |
| C3 | 1.47 ± 0.03 | 1.16 ± 0.08 | .002 |
| λt (10−3 mm2/s) | |||
| C1 | 0.51 ± 0.04 | 0.35 ± 0.04 | .003 |
| C2 | 0.59 ± 0.04 | 0.44 ± 0.04 | .004 |
| C3 | 0.62 ± 0.04 | 0.47 ± 0.05 | .006 |
| MD (10−3 mm2/s) | |||
| C1 | 0.77 ± 0.04 | 0.60 ± 0.06 | .009 |
| C2 | 0.89 ± 0.03 | 0.66 ± 0.05 | <.001 |
| C3 | 0.90 ± 0.03 | 0.70 ± 0.06 | .002 |
Note:—MD indicates mean diffusivity.
* P values represent the level of significance from the Tukey test for multiple comparisons. Data are reported as mean ± SEM.