| 期别 | 特征波 |
| W | Alpha (8~13 Hz), Beta (12~30 Hz) |
| N1 | Theta (4~8 Hz) |
| N2 | Spindle (12~14 Hz), K Complex (1 Hz) |
| N3 | Delta (0.5~2 Hz) |
| REM | Alpha (8~13 Hz), Beta (12~30 Hz), Sawtooth Wave (2~6 Hz) |