Sleep study

Depending on the method being used, sleep studies can help diagnose or rule out the following disorders: The most common sleep studies are: Polysomnography records several body functions during sleep, including brain activity, eye movement, oxygen and carbon dioxide blood levels, heart rate and rhythm, breathing rate and rhythm, the flow of air through the mouth and nose, snoring, body muscle movements, and chest and belly movement.

[3] The MSLT measures, by several nap opportunities in one day, how long it takes a person to fall asleep.

[2][4] Like the MSLT, the MWT is performed in a sleep diagnostic center over 4 - 5 nap periods.

A mean sleep onset latency of less than 10 minutes is suggestive of excessive daytime sleepiness.

Items measured include oxygen saturation, heart rate, airflow, body movement, time spent snoring, sleep position, and brain waves.