Skip to Content
Home > Wellness > Health Library > Polysomnogram
A polysomnogram is a procedure that records a variety of body
functions during sleep, including eye movement, muscle activity, and electrical
activity of the brain. This test is done as part of a series of sleep tests to
diagnose sleep disorders, such as sleep apnea, and problems staying awake or
Polysomnograms usually are done in a hospital sleep lab. They are
monitored by a trained sleep lab technician. Small pad or patches called
electrodes are attached to the person's head and body to record brain activity,
eye movements, muscle movements, heart rhythm and rate, limb movements, and
snoring. There is no pain or physical discomfort associated with these tests.
Polysomnogram recording equipment and video monitors record the person's
movements and activities during sleep. The technician is in a separate room
monitoring the test.
Polysomnogram test results are typically available in 1 to 2
Current as of:
February 19, 2016
Anne C. Poinier, MD - Internal Medicine & Karin M. Lindholm, DO - Neurology
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
I Want To...
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.