Actigraphy is a non-invasive technique used to assess cycles of activity and rest over a period of time (several days to several weeks). Your doctor may ask you to wear an actigraph for a period of time to get an object measurement of your sleep schedule. An actigraph is worn like a watch on the wrist of your non-dominant hand and measures motor activity.

Actigraphy data can be very helpful for assessing circadian rhythm disorders such as advanced or delayed sleep disorders and insomnia.

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