What is the role of actigraphy in the workup of insomnia?

Updated: Sep 11, 2018
  • Author: Jasvinder Chawla, MD, MBA; Chief Editor: Selim R Benbadis, MD  more...
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For actigraphy, a portable device is worn around the wrist to record gross motor activity and light/darkness over extended periods. This study provides an indirect objective measure of sleep and wake time. Actigraphy has shown concordance with polysomnography in the assessment of total sleep time. [66] The role of actigraphy in insomnia evaluation has not been well established, but actigraphy can help document sleep patterns and circadian rhythms.

Distinguishing primary insomnia from circadian-rhythm disorders and identifying paradoxical insomnia is useful, particularly with insomnia that is refractory to treatment.

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