Table 1.
Global- and tract-specific associations between Symbol Span Raw Score and diffusion metrics obtained using partial correlations that controlled for agea
| Tract | faxon | Daxon | RDextra | ADextra | FA | RD | AD |
|---|---|---|---|---|---|---|---|
| Global white matter | 0.544* (0.019) | 0.389 (0.111) | 0.242 (0.334) | 0.456 (0.057) | 0.192 (0.446) | −0.155 (0.540) | 0.064 (0.801) |
| Left cingulum | 0.542* (0.020) | 0.385 (0.115) | 0.264 (0.290) | 0.555* (0.017) | 0.362 (0.139) | −0.211 (0.400) | 0.511* (0.030) |
| Right cingulum | 0.655** (0.003) | 0.501* (0.034) | 0.198 (0.432) | 0.611** (0.007) | 0.470* (0.049) | −0.299 (0.229) | 0.461 (0.054) |
| Splenium of corpus callosum | 0.538* (0.021) | 0.478* (0.045) | 0.127 (0.615) | 0.374 (0.126) | 0.161 (0.522) | −0.095 (0.709) | 0.141 (0.577) |
| Genu of corpus callosum | 0.347 (0.158) | 0.368 (0.133) | 0.041 (0.872) | 0.189 (0.453) | 0.082 (0.748) | −0.125 (0.620) | −0.094 (0.710) |
| Left inferior longitudinal fasciculus | 0.613** (0.007) | 0.594** (0.009) | 0.302 (0.223) | 0.474* (0.047) | 0.249 (0.319) | −0.062 (0.805) | 0.293 (0.238) |
| Left inferior occipitofrontal fasciculus | 0.559* (0.018) | 0.477* (0.045) | 0.326 (0.187) | 0.456 (0.057) | 0.137 (0.589) | −0.013 (0.960) | 0.293 (0.239) |
| Left superior longitudinal fasciculus | 0.616** (0.006) | 0.471* (0.049) | 0.326 (0.187) | 0.379 (0.121) | 0.184 (0.464) | −0.173 (0.493) | 0.048 (0.850) |
| Right superior longitudinal fasciculus | 0.484* (0.042) | 0.224 (0.371) | −0.018 (0.944) | 0.174 (0.490) | 0.225 (0.369) | −0.308 (0.214) | −0.113 (0.656) |
| Left uncinate fasciculus | 0.412 (0.089) | 0.426 (0.078) | 0.322 (0.193) | 0.339 (0.168) | 0.136 (0.589) | −0.028 (0.911) | 0.476* (0.046) |
ap values are listed in parentheses.
*p < 0.05;
**p < 0.01 (significant correlations).