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
How this information was developed to help you make better health decisions.