Actigraphy is a test that's done while you go about your normal routine. It's useful for all age groups and doesn't require an overnight stay at a sleep center.

An actigraph is a simple device that's usually worn like a wristwatch. Your doctor may ask you to wear the device for several days and nights, except when bathing or swimming. Actigraphy gives your doctor a better idea about your sleep schedule, such as when you sleep or nap and whether the lights are on while you sleep.

Doctors can use actigraphy to help diagnose a number of sleep disorders, including those related to jet lag and shift work. The test also may be used to check how well sleep treatments are working.

Reference: National Heart, Lung and Blood Institute