Sleep studies are a series of tests that help evaluate what
happens to the body during sleep. They can help diagnose sleep disorders, which
include sleep-disruptive behaviors (such as sleepwalking), sleep apnea, daytime
sleepiness, and insomnia.
Sleep studies include:
- Polysomnography, which records a variety of
body functions during sleep, including electrical activity of the brain, eye
movement, muscle activity, heart rate, breathing, air flow through the nose and
mouth, and blood oxygen levels.
- Multiple sleep latency test, which
measures how long it takes the person to fall asleep during the course of a
- Multiple wake test, which measures the person's ability to
stay awake during a designated wakeful time.
Sleep studies usually require an overnight stay in a sleep