Table 2 Frequency analysis

From: Short naps improve subsequent learning in a high school setting

Sleep Stage

Frequency

Power density (µV2 /Hz) in NREM

S1

Theta (4–8 Hz)

7.57 ± 0.69

Alpha (8–13 Hz)

3.17 ± 0.27

NREM (S2 + S3)

SWA (0.5–4 Hz)

78.74 ± 8.93

Slow oscillation (0.5–1 Hz)

155.61 ± 27.17

Delta (1–4 Hz)

66.45 ± 6.76

Theta (4–8 Hz)

16.47 ± 1.25

Alpha (8–13 Hz)

4.33 ± 0.53

Spindles (12–15 Hz)

3.03 ± 0.27

  1. Mean power density ± SEM in S1 and NREM sleep.