Table 2.
Scalp‐to‐cortex distance and cortical thickness of left M1 across groups
| Morphometric measures | Young (n = 40) | Middle age (n = 62) | Old age (n = 55) | Dementia (n = 43) | F (χ 2) | P value |
|---|---|---|---|---|---|---|
| CT (mm) | 4.02 ± 0.26 | 3.93 ± 0.23 | 3.65 ± 0.33 | 3.33 ± 0.49 | 39.68 | <.001 |
| SCD (mm) | 14.33 ± 2.49 | 14.79 ± 2.62 | 15.42 ± 2.81 | 16.93 ± 4.21 | 6.28 | <.001 |
| SCD/CT | 3.57 ± 0.66 | 3.77 ± 0.68 | 4.25 ± 0.89 | 5.15 ± 1.25 | 27.41 | <.001 |
Data are raw scores and presented as mean ± SD.
Abbreviations: CT, cortical thickness; M1, primary motor area; SCD, scalp‐to‐cortex distance.