What we record
Modern polysomnography is multi-channel measurement of the body during sleep. Each channel answers a different question; together they paint a complete picture of one night.
Three measurement axes
Sleep architecture
- EEG — brain electrical activity to identify sleep stages
- EOG — eye movements to detect REM
- Chin EMG — muscle tone to distinguish REM atonia
Respiratory assessment
- Nasal airflow sensors (thermal + pressure)
- Microphone for snoring intensity
- Chest and abdominal effort belts
- Blood oxygen saturation (SpO₂)
- End-tidal or transcutaneous CO₂ — added at our clinic since 2005
Movement monitoring
- Bilateral leg EMG — periodic limb movement
- Arm EMG when indicated
- Position sensor
- Digital video — for parasomnia evaluation
The Susleep room
Our purpose-built study rooms were developed in 2008 in collaboration with LG D-square, Feelux, and Evezary. The result: acoustic isolation, individualized HVAC, blackout treatment, hotel-grade bedding, and a private bathroom with shower. The room is designed to look like a quiet hotel — not a hospital.
What to expect
- 20:00 arrival, room tour, technologist introduction
- 20:30–21:30 sensor placement (non-invasive, takes about an hour)
- 21:30 you settle in with your usual evening routine
- 23:00 lights out, continuous monitoring
- 06:30 wake, sensor removal, shower available
- Within 7 business days: formal report and follow-up consultation
Polysomnography is interpreted by a board-certified neurologist who knows EEG. That is not standard everywhere — and it changes what we find.— Seoul Sleep Center clinical principle