Abstract and Keywords
Although polysomnography is the gold standard for recording sleep, the use of actigraphy in conjunction with a sleep diary is now common in the study of sleep/wake patterns in infants, children, and adolescents. Actigraphy has the advantage of being able to record data over long periods of time while the subject carries out his or her normal routine. The devices are small, lightweight, and can be worn on the wrist in a similar manner to a wristwatch, or on the ankle as is often used in infant studies. A number of studies have validated actigraphy against polysomnography for determining sleep and found good agreements; however, the specificity for determining wake is low across all ages of children. In conjunction with a sleep diary, the accuracy of actigraphy is significantly improved. Conversely, accuracy of parental reporting of sleep and wake using a sleep diary can be significantly improved when used in conjunction with actigraphy. The use of actigraphy in clinical medicine is expanding as it provides important supplementary information to clinicians regarding a variety of sleep disorders.
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