Table 4.
Results of regression analyses investigating how arcuate fasciculus (AF) asymmetry, based on either fractional anisotropy (FALI) or the number of streamlines (SLI), affects performance on language assessments while accounting for scanner type
| BNT | PPVT | COWAT | SFT | CI | VG Post | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F | p | F | p | F | p | F | p | F | p | F | p | |
| FALI | ||||||||||||
| All subjects | 1.33 | 0.25 | 0.73 | 0.39 | 0.04 | 0.84 | 1.98 | 0.16 | 0.61 | 0.44 | 0.21 | 0.65 |
| Right‐handed | 1.28 | 0.26 | 1.43 | 0.23 | 0.34 | 0.56 | 1.96 | 0.16 | 1.31 | 0.25 | 0.10 | 0.75 |
| Atypical | 1.82 | 0.18 | 0.00 | 0.98 | 0.00 | 0.94 | 0.37 | 0.54 | 0.11 | 0.74 | 1.00 | 0.32 |
| SLI | ||||||||||||
| All subjects | 1.01 | 0.32 | 0.72 | 0.40 | 0.52 | 0.47 | 2.54 | 0.11 | 3.39 | 0.067 | 0.97 | 0.33 |
| Right‐handed | 0.30 | 0.58 | 0.91 | 0.34 | 1.25 | 0.27 | 4.00 | 0.047 | 0.03 | 0.86 | 0.55 | 0.46 |
| Atypical | 3.56 | 0.063 | 5.44 | 0.022 | 0.02 | 0.89 | 0.03 | 0.87 | 7.00 | 0.0098 | 0.34 | 0.56 |
Note. F‐value (F) and corresponding p‐value (p) reported for results in all subjects combined, in right‐handed subjects, and in subjects with atypical handedness. BNT = Boston Naming Test; PPVT = Peabody Picture Vocabulary Test; COWAT = Controlled Oral Word Association Test; SFT = Semantic Fluency Test; CI = Complex Ideation; VG Post = verb generation postscan noun recognition test.