Types of sleep studies
| Test | Equipment and parameters |
| Video polysomnography (Requires a specialist centre) | Electroencephalography: monitors cortical brain activity Electromyography: monitors muscle activity, leg movements Electrooculography: monitors eye movements Electrocardiogram: monitors cardiac rhythm Heart rate Oximetry: monitors oxygen levels in blood Nasal and oral airflow: monitors respiratory flow Respiratory inductance plethysmography: monitors respiratory effort Body position Microphone: monitors snoring Video |
| Respiratory polygraphy/ limited channel sleep study (Can be performed in hospital or at home) | Oxygen saturation Heart rate Nasal ± oral airflow Respiratory inductance plethysmography Body position Snoring Electromyography (may not be available in some studies) |
| Overnight pulse oximetry (Can be performed at home) | Oxygen saturation Heart rate |