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Percentage of time spent in each sleep stage (mean ± SEM) after learning and nonlearning conditions.
| Sleep stage | Learning | Nonlearning* |
|---|---|---|
| W | 3.0 ± 1.2 % | 1.1 ± 0.4 % |
| S1 | 4.2 ± 0.9 % | 4.7 ± 0.8 % |
| S2 | 56.3 ± 1.7 % | 56.0 ± 1.1 % |
| S3 | 9.4 ± 1.3 % | 10.2 ± 1.2 % |
| S4 | 7.3 ± 1.1 % | 7.3 ± 1.1 % |
| REM | 19.0 ± 1.7 % | 19.9 ± 1.4 % |
| SOL | 13.6 ± 3.3 min | 12.3 ± 2.8 min |
*All pairwise comparisons are nonsignificant (p> 0.30). W, Wake; S1–S4, non-REM sleep stages 1–4; REM, rapid eye movement sleep; SOL, sleep onset latency.
