Table 2.
White matter regions of interest
| ROI | Max. slice | Region size (voxels)
|
|
|---|---|---|---|
| Younger adults | Older adults | ||
| Genu* | 4 | 107 (38) | 83 (26) |
| Splenium | 4 | 110 (53) | 118 (58) |
| SFG* | 3 | 195 (69) | 122 (44) |
| PCF* | 3 | 239 (81) | 173 (53) |
| ALC | 3 | 65 (15) | 62 (21) |
| PV | 4 | 284 (80) | 243 (72) |
| FFG | 3 | 253 (73) | 275 (88) |
| PAR* | 3 | 1132 (265) | 873 (289) |
Note: Imaging slices were near-axial oblique, 6 mm thick, parallel to AC–PC. Max. slice, maximum number of slices included in ROI. ROI, region of interest. Region size is mean number of voxels across participants; standard deviations are in parentheses. See Fig. 4 legend for ROI labels.
*
Age group difference in region size significant at p < 0.05.