Table 1. Sensitivity and filter settings on standard polysomnograpy
채널(생체신호) | Sensitivity | Low filter (1/2 amp low), Hz | High filter (1/2 amp high), Hz |
EEG | 50 μV/cm | 0.3 | 70 |
EOG | 50 μV/cm | 0.3 | 30 |
EMG | 500 μV/cm | 10 | 90-100 |
ECG | 500 μV/cm | 0.3-1 | 30 |
Thermister | Variable | 0.1 | 15 |
Thoracic/abdominal belts | Variable | 0.1 | 15 |
Pressure transducer | Variable | 0.01 or DC* | 15 (100 for snoring) |
Oximeter | Volt=100% | DC* | 15 |
DC : direct current, EEG : electroencephalogram, EOG : electrooculogram, EMG : electromyogram, ECG : electrocardiogram