Results from post hoc comparisons for fractional anisotropy (FA) between controls and patients with SCA1 and SCA2
| FA | Controls | SCA1 | SCA2 | SCA1-Controls | SCA2-Controls | SCA1-SCA2 |
|---|---|---|---|---|---|---|
| CST (cerebral peduncle) | 0.63 ± 0.06 | 0.53 ± 0.09 | 0.48 ± 0.07 | ** | *** | * |
| CST (pons) | 0.47 ± 0.05 | 0.39 ± 0.09 | 0.38 ± 0.07 | ** | ** | n.s. |
| TPF | 0.47 ± 0.06 | 0.42 ± 0.09 | 0.34 ± 0.11 | * | *** | *** |
| SCP | 0.48 ± 0.04 | 0.42 ± 0.05 | 0.43 ± 0.07 | **. | * | n.s. |
| MCP | 0.54 ± 0.07 | 0.44 ± 0.08 | 0.40 ± 0.12 | ** | *** | n.s. |
| CWM | 0.45 ± 0.05 | 0.30 ± 0.11 | 0.34 ± 0.10 | *** | *** | n.s. |
Note:—CST indicates corticospinal tract; TPF, transverse pontine fibers; SCP, superior cerebellar peduncles; MCP, middle cerebellar peduncles; CWM, cerebellar white matter; n.s., not significant.
Values are expressed as mean ± SD.
* P < .05,
** P < .01,
*** P < .001.