Table 1
MT = morning type, ET = evening type. Age in years (SD), sleep in hours.
| Diurnal_preference | N | Age | Sleep | % Female | ||
|---|---|---|---|---|---|---|
| MT | 2780 | 56.1 | (7.21) | 7.12 | (1.01) | 52 |
| ET | 950 | 54.2 | (7.67) | 7.11 | (1.07) | 49 |
Figure 1
Region of greater precuneus grey matter volume in ET vs MT participants (for cluster details please see text). Displayed are sagittal, coronal and axial slices. Numerals refer to coordinates in MNI standard space. Images are presented in neurological space (left brain on right side).
Table 2
Whole brain voxelwise GLM. Data show region of peak activation, MNI coordinates, maximum t statistic and cluster size (voxels).
| Region/s | Hemisphere | X | Y | Z | Maximum T statistic | Cluster size |
|---|---|---|---|---|---|---|
| Thalamus, NAcc, caudate, putamen, pallidum | R/L | 0 | –2 | 16 | 3.07 | 2240 |
| Orbitofrontal cortex, frontal pole | R | 32 | 38 | –8 | 3.03 | 434 |
| Inferior frontal gyrus | R | 60 | 22 | 8 | 3.21 | 150 |
| Orbitofrontal cortex, frontal pole | L | –46 | 42 | –8 | 2.82 | 140 |
| Orbitofrontal cortex, frontal pole | L | –40 | 30 | –20 | 2.83 | 70 |
Figure 2
Region of greater thalamic/striatum GM volume in ET vs MT participants (for cluster details please see Table 2). Numerals as in figure 1.