Table 5.
Spelling-impaired sample | Control-group | p | |
---|---|---|---|
Right PLIC | |||
FA | 0.4838 | 0.5079 | 0.005 |
MD | 0.00054 | 0.00051 | 0.000 |
Axial D. (mm2 s−1 ) | 0.00104 | 0.00101 | 0.023 |
Radial D. (mm2 s−1 ) | 0.00029 | 0.00026 | 0.000 |
Left PLIC | |||
FA | 0.4989 | 0.5176 | 0.026 |
Radial D. (mm2 s−1 ) | 0.00030 | 0.00028 | 0.022 |
Right SCR | |||
FA | 0.2130 | 0.2233 | 0.032 |
MD | 0.00033 | 0.00031 | 0.002 |
Axial D. (mm2 s−1 ) | 0.00053 | 0.00050 | 0.004 |
Radial D. (mm2 s−1 ) | 0.00024 | 0.00021 | 0.003 |
Right SLF | |||
Radial D. (mm2 s−1 ) | 0.00037 | 0.00034 | 0.049 |
Comparison of mean FA, MD, axial and radial diffusivity indices across an a priori defined ROI between the spelling-impaired sample and controls Axial diffusivity and radial diffusivity values are expressed in mm2 s−1
R PLIC (FA: F (1,26) = 9.25, p < 0.05, ηp2 = 0.26; MD: F (1,26) = 21.03, p < 0.001, ηp2 = 0.45; L1: F (1,26) = 5.83, p < 0.05, ηp2 = 0.18; L23: F (2,25) = 17.30, p < 0.001, ηp2 = 0.40)
R SCR (FA: F (1,26) = 5.12, p < 0.05, ηp2 = 0.16; MD: F (1,26) = 12.29, p < 0.05, ηp2 = 0.32; L1: F (1,26) = 9.72, p < 0.05, ηp2 = 0.27; L23: F (1,26) = 10.45, p < 0.05, ηp2 = 0.29)
R SLF (L23: F (1,26) = 4.27, p = 0.05, ηp2 = 0.14)
L PLIC (FA: F (1,26) = 5.59, p < 0.05, ηp2 = 0.18; L23: F (1,26) = 5.98, p < 0.05, ηp2 = 0.19)
TG training group, CG control group, WG waiting group, FA fractional anisotropy, MD mean diffusivity, PLIC posterior limb of internal capsule, SCR superior corona radiata, SLF superior longitudinal fasciculus