Table 2.
Stage | Parameter | Mean | SD | PFA | PAD |
---|---|---|---|---|---|
N2 | Spindle density (spindles per minute) | 9.09 | ±2.84 | 0.33 | 0.04 |
Mean spindle power (μV) | 4.22 | ±0.55 | 0.50 | 0.02 | |
N3 | Spindle density (spindles per minute) | 5.63 | ±3.29 | 0.31 | 0.04 |
Mean spindle power (μV) | 3.54 | ±0.50 | 0.58 | 0.11 |
The rightmost columns indicate the corrected p value for the most significant voxel of the correlation between the spindle parameter (row) and the DTI parameter (column). A significant correlation between AD and spindle power during sleep stage N2 was observed, indicating that axial diffusivity was higher in individuals with a stronger spindle power (Fig. 3). Furthermore, axial diffusivity was higher in individuals with a higher spindle density in sleep stages N2 and N3 in the temporal branch of the right inferior fronto-occipital fascicle (Fig. 3).