Table 2.
Differential activation patterns in the whole-brain analysis
| Contrast | Region | Side | Voxels | t | x | y | z |
|---|---|---|---|---|---|---|---|
| (a) Group effect on whole-brain activation | |||||||
| AA > HA | |||||||
| Cerebellum | R | 702 | 5.24 | 14 | −50 | −26 | |
| Cerebellum | L | 213 | 3.84 | −22 | −62 | −28 | |
| HA > AA | |||||||
| Ventromedial prefrontal cortex (BA 24/32) | B | 279 | 3.88 | 8 | 34 | 8 | |
| (b) Group effect on whole-brain activation × sleep amount | |||||||
| (AA × sleep) > (HA × sleep) | |||||||
| Anterior cingulate cortex (BA 24/33) | B | 308 | 4.13 | 2 | 6 | 26 | |
| Hippocampus/amygdala/occipital1 | L | 319 | 3.94 | −12 | −40 | −6 | |
| Middle temporal gyrus | L | 210 | 3.77 | −54 | −62 | 14 | |
| Lingual gyrus/cerebellum | R | 150 | 3.31 | 10 | −52 | −6 | |
| (HA × sleep) > (AA × sleep) | |||||||
| No differential activation | |||||||
Note. Voxels = number of voxels per cluster; x, y, z = MNI coordinates of peak voxel; AA = anxious adolescents; HA = healthy adolescents; R = right side; L = left side; B = bilateral; p < .05, corrected
1This cluster extended to several areas. Given our a priori interest in the hippocampus, the hippocampus subpeak within the overall cluster (−20, −20, −18) was used as the PPI seed