Table 4.
Recommended channels for cardiorespiratory polysomnography. The table presents the functions to be assessed, the corresponding biosignal, the technical requirements, and the technical specifications in terms of optimal sampling rate and filter settings
| Function | Parameter | Technical requirements | Optimal sampling rate | Filter |
|---|---|---|---|---|
| Sleep | EEG, EOG | Electrodes | 500 Hz | 0.3–35 Hz |
| EMG | Electrodes | 500 Hz | 10–100 Hz | |
| Breathing | Oronasal airflow | Nasal pressure cannula, thermistor | 100 Hz | 0.1–15 Hz |
| Respiratory effort | Induction plethysmography | 100 Hz | 0.1–15 Hz | |
| Oxygen saturation | SaO2 | 25 Hz | – | |
| Carbon dioxide saturation | tcPaCO2 | 25 Hz | – | |
| Snoring | Microphone | 500 Hz | – | |
| Cardiac | ECG | Electrodes | 500 Hz | 0.3–70 Hz |
| Movement | EMG tibialis muscle | Electrodes | 500 Hz | 10–100 Hz |
| Body position | Position sensor | 1 Hz | – | |
| Video | Video camera | 5 Hz | – |
EEG electroencephalogram, EOG electrooculogram, EMG electromyogram, ECG electrocardiogram, SaO 2 oxygen saturation, tcPaCO 2 transcutaneous measurement of carbon dioxide partial pressure