Percentage of time spent in sleep stages (± SEM)
| Sleep stage | Sparse-SN | Dense-SN |
|---|---|---|
| Stage 1 | 6.10 ± 1.01% | 4.77 ± 0.55% |
| Stage 2 | 50.94 ± 2.04% | 52.00 ± 1.53% |
| SWS | 18.93 ± 1.65% | 20.17 ± 1.47% |
| REM | 24.02 ± 1.35% | 23.06 ± 0.90% |
| Sleep efficiency | 90.91 ± 1.56% | 91.59 ± 1.38% |
| Total sleep time | 466.30 ± 9.86 min | 470.80 ± 9.56 min |