Paper Information

Title: 

THE ROLE OF ACTIGRAPHY IN THE STUDY OF SLEEP DISORDERS

Type: POSTER
Author(s): TAHMASIAN M.,KHAZAEI H.A.,GHADAMI M.R.,RUSSO M.B.
 
 
 
Name of Seminar: IRANIAN CONGRESS OF PHYSIOLOGY AND PHARMACOLOGY
Type of Seminar:  CONGRESS
Sponsor:  PHYSIOLOGY AND PHARMACOLOGY SOCIETY, MASHHAD UNIVERSITY OF MEDICAL SCIENCE
Date:  2007Volume 18
 
 
Abstract: 

Activity monitoring has a long history both in medicine and in sleep research. The term "Actigraphy" refers to methods using miniaturized computerized wristwatch-like devices generally placed on the wrist (although they can also placed on the ankle or trunk) to record movement. Collected data are downloaded to a computer for display and analysis of activity/inactivity rhythm parameters that in turn can be further analyzed to estimate wake/sleep parameters (such as total sleep time, percent of time spent asleep, total wake time, percent of time spent awake & number of awakenings). Actigraphy provides a useful, cost-effective and portable method for assessing specific sleep disorders. The advantage of wrist-mounted actigraphy over traditional polysomnography (PSG) is convenient recording continuously for one day, several days, weeks or even longer. The disadvantage of wrist-mounted actigraphy is that the uni-dimentional signal does not identify individual sleep states. Wrist-mounted actigraphy also been shown effective in documenting the effects of various behavioral and medical interventions on sleep-wake patterns. Wrist-mounted actigraphy has limitations when applied in clinical practice, however: it is not sufficient for all clinical groups and for diagnosis of sleep disorders in patients with high motility during sleep or who have long motionless periods of wakefulness during sleep.

 
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