Table 1.
Sleep scoring and conditions of interesta
| Wake | NREM1 | NREM2 | NREM3 | REM | Total | |
|---|---|---|---|---|---|---|
| Duration (min) | 88.5 (±9.6) | 45.3 (±5.6) | 186.3 (±13.4) | 79.7 (±7.3) | 76.9 (±6.5) | 499.6 (±6.6) |
| % of trials | 17.8 (±1.6) | 9.7 (±1.0) | 39.6 (±2.0) | 16.4 (±1.4) | 16.5 (±0.8) | 100 |
| Marked arousals | 0 | 12.3 (±1.6) | 13.4 (±1.8) | 2.6 (±0.5) | 7.0 (±1.5) | 35.8 (±3.8) |
aData are mean (SEM); N = 18. Participants' vigilance was scored according to established guidelines as wakefulness, NREM1, NREM2, NREM3, and REM stages on 20-s-long windows (see Materials and Methods). Duration indicates the average time participants spend in each stage. Each trial was attributed a sleep stage defined as the most conservative scoring obtained on a [−2, 8] s window around stimulus onset (% of trials). Marked arousals indicates the mean number of trials that were rescored as wakefulness due to an arousal.