Table 1.

Percentage of time spent in each sleep stage (mean ± SEM) after learning and nonlearning conditions.

Sleep stageLearningNonlearning*
W3.0 ± 1.2 %1.1 ± 0.4 %
S14.2 ± 0.9 %4.7 ± 0.8 %
S256.3 ± 1.7 %56.0 ± 1.1 %
S39.4 ± 1.3 %10.2 ± 1.2 %
S47.3 ± 1.1 %7.3 ± 1.1 %
REM19.0 ± 1.7 %19.9 ± 1.4 %
SOL13.6 ± 3.3 min12.3 ± 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.