Table 3.
Combination of polysomnography sensors used and analysed for automated sleep staging (three states), which included electrocardiogram (ECG), electromyogram (EMG), and electrooculogram (EOG) signals. The Z3 combination represented our previous study and was used as a comparison to determine the merits of electroencephalogram (EEG) features (Cooray et al., 2019).
| Sleep Staging Signals | #Features | #Sensors | ID |
|---|---|---|---|
| ECG | 75 | 1 | A1 |
| EOG | 25 | 1 | B1 |
| EMG | 17 | 1 | C1 |
| ECG + EOG | 98 | 2 | A2 |
| ECG + EMG | 90 | 2 | B2 |
| EOG + EMG | 40 | 2 | C2 |
| ECG + EOG + EMG | 113 | 3 | A3 |
| EEG + EOG + EMG | 128 | 3 | Z3 |