Table 2.
Activation peaks for the contrast Children > Adults (top) and Adults > Children (bottom) with and without correction for group differences in white (FA) and grey (dGM) matter. Z-values refer to significant activation peaks at p < 0.001 (uncorrected for multiple comparisons). All cluster reported are significantly active at p < 0.05 (FWER-correction). Coordinates are reported in the MNI space; L: left hemisphere, R: right hemisphere, FA: fractional anisotropy, dGM: grey matter density.
| CHILDREN > ADULTS | |||||||
|---|---|---|---|---|---|---|---|
| Peak location | BA | Side | x(mm) | y(mm) | z(mm) | z-values | |
| fMRI | Cluster # 1 (480 voxels) | ||||||
| FrontoPolar Cortex | 10 | L | 0 | 53 | 7 | 4.38 | |
| R | 15 | 56 | 4 | 3.03 | |||
| fMRI-FA | Cluster # 1 (511 voxels) | ||||||
| FrontoPolar Cortex | 10 | L | 0 | 53 | 7 | 4.35 | |
| R | −3 | 56 | −8 | 4.22 | |||
| R | 6 | 53 | −5 | 4.22 | |||
| fMRI-dGM | Cluster # 1 (147 voxels) | ||||||
| FrontoPolar Cortex | 10 | L | −12 | 53 | 19 | 3.77 | |
| R | 9 | 50 | 7 | 3.74 | |||
| R | 3 | 56 | 13 | 3.60 | |||
| ADULTS > CHILDREN | |||||||
| fMRI | Cluster # 1 (327 voxels) | ||||||
| Postcentral gyrus | 1; 2 | L | −57 | −28 | 40 | 4.63 | |
| Inf. Parietal Lobule | 40 | L | −36 | −43 | 52 | 4.00 | |
| Cluster # 2 (143) | |||||||
| Inf. Parietal Lobule | 40 | R | 39 | −34 | 40 | 5.57 | |
| R | 51 | −34 | 40 | 4.39 | |||
| Postcentral Gyrus | 3 | R | 60 | −25 | 40 | 5.17 | |
The significant clusters reported in fMRI did not survive to correction for group differences in grey and white matter.