Table 1.
Mean (± SD) polysomnographic parameters per group over the four nights of the experiment
| Parameters | Control |
Sleep Deprived |
||||||
|---|---|---|---|---|---|---|---|---|
| Session 1 | Session 2 | Session 3 | Session 4 | Session 1 | Session 2 | Session 3 | Session 4 | |
| Total sleep time (min) | 409.8 ± 49.8 | 425.1 ± 30.6 | 429.2 ± 59.4 | 386.7 ± 69.8 | 446.8 ± 31.3 | — | — | 624.5 ± 33.0 |
| Sleep latency (min) | 11.5 ± 8.4 | 12.1 ± 14.9 | 11.6 ± 7.8 | 14.1 ± 24.9 | 14.5 ± 11.5 | — | — | 2.4 ± 4.0 |
| REM latency (min) | 95.0 ± 53.1 | 115.9 ± 41.8 | 78.9 ± 18.7 | 71.5 ± 33.7 | 68.7 ± 9.0 | — | — | 138.4 ± 88.9 |
| Sleep efficiency (%) | 89.8 ± 8.5 | 93.1 ± 5.4 | 93.7 ± 3.5 | 92.5 ± 7.9 | 91.7 ± 3.7 | — | — | 97.9 ± 1.3 |
| Stage 1 (%) | 3.6 ± 3.3 | 2.8 ± 1.6 | 2.2 ± 1.3 | 1.7 ± 1.4 | 3.2 ± 2.1 | — | — | 0.9 ± 0.6 |
| Stage 2 (%) | 53.8 ± 7.9 | 53.5 ± 5.9 | 52.2 ± 6.1 | 46.9 ± 6.4 | 51.8 ± 7.0 | — | — | 49.2 ± 5.5 |
| Stage 3-4 (%) | 21.5 ± 8.5 | 24.0 ± 6.9 | 22.6 ± 8.3 | 25.6 ± 6.5 | 20.7 ± 5.7 | — | — | 31.2 ± 4.7 |
| REM (%) | 21.0 ± 5.6 | 19.8 ± 4.1 | 22.9 ± 5.3 | 24.8 ± 5.3 | 24.2 ± 4.9 | — | — | 18.9 ± 4.1 |
| Microarousal (no./h) | 8.0 ± 4.1 | 7.9 ± 3.1 | 8.1 ± 3.2 | 7.6 ± 2.3 | 7.4 ± 2.8 | — | — | 3.1 ± 1.2 |
Session 1 (baseline), session 2 and 3 (total sleep deprivation in deprived group, normal sleep in the control group), session 4 (recovery sleep in the deprived group, normal sleep in controls). See text for detailed statistical analysis.