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. 1998 Jul 21;95(15):8957–8962. doi: 10.1073/pnas.95.15.8957

Table 1.

Daily sleep–waking percentages

Group n LD schedule W NREM REM
Control 6 12/12 44.45% 48.74% 6.81%
±2.25% ±2.41% ±0.41%
Dark pulse 45.14% 47.97% 6.89%
±1.52% ±1.72% ±0.37%
3/3 43.43% 49.34% 7.23%
±3.70% ±3.84% ±0.27%
SC-PT lesion 5 12/12 46.20% 45.89% 7.91%
±3.01% ±1.55% ±1.60%
Dark pulse 45.83% 45.70% 8.47%
±2.17% ±2.19% ±1.21%
3/3 45.80% 46.88% 7.32%
±2.28% ±2.24% ±1.00%
VC lesion 6 12/12 42.29% 48.47% 9.24%
±5.80% ±4.68% ±1.39%
Dark pulse 41.58% 48.98% 9.44%
±3.77% ±2.74% ±1.67%
3/3 43.36% 47.96% 8.68%
±4.07% ±4.13% ±0.40%

Average daily percentages of wakefulness (W), NREM sleep, and REM sleep are reported for normal control rats, rats with SC-PT lesions, and rats with VC lesions exposed to three light/dark (LD) schedules: 12-h light/12-h dark (12/12); 12-h light/12-h dark with 5-min dark pulses occurring every 30 min during the 12-h light period (dark pulse); and 3-h light/3-h dark (3/3).