The role of actigraphy in sleep medicine. Sadeh, A. and Acebo, C. Sleep Med Rev, 6(2):113-24, 2002.
The role of actigraphy in sleep medicine. [pdf]Paper  abstract   bibtex   
During the last decade actigraphy (activity-based monitoring) has become an essential tool in sleep research and sleep medicine. The validity, reliability and limitations of actigraphy for documenting sleep-wake patterns have been addressed. Normative data on sleep-wake patterns across development have been collected. Multiple studies have documented the adequacy of actigraphy to distinguish between clinical groups and to identify certain sleep-wake disorders. Actigraphy has also been shown to be effective in documenting the effects of various behavioral and medical interventions on sleep-wake patterns. Actigraphy is less useful for documenting sleep-wake in individuals who have long motionless periods of wakefulness (e.g. insomnia patients) or who have disorders that involve altered motility patterns (e.g. sleep apnea). Potential users should be aware of a number of pitfalls of actigraphy: (1) validity has not been established for all scoring algorithms or devices, or for all clinical groups; (2) actigraphy is not sufficient for diagnosis of sleep disorders in individuals with motor disorders or high motility during sleep; (3) the use of computer scoring algorithms without controlling for potential artifacts can lead to inaccurate and misleading results.
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 abstract = {During the last decade actigraphy (activity-based monitoring) has
become an essential tool in sleep research and sleep medicine. The
validity, reliability and limitations of actigraphy for documenting
sleep-wake patterns have been addressed. Normative data on sleep-wake
patterns across development have been collected. Multiple studies
have documented the adequacy of actigraphy to distinguish between
clinical groups and to identify certain sleep-wake disorders. Actigraphy
has also been shown to be effective in documenting the effects of
various behavioral and medical interventions on sleep-wake patterns.
Actigraphy is less useful for documenting sleep-wake in individuals
who have long motionless periods of wakefulness (e.g. insomnia patients)
or who have disorders that involve altered motility patterns (e.g.
sleep apnea). Potential users should be aware of a number of pitfalls
of actigraphy: (1) validity has not been established for all scoring
algorithms or devices, or for all clinical groups; (2) actigraphy
is not sufficient for diagnosis of sleep disorders in individuals
with motor disorders or high motility during sleep; (3) the use of
computer scoring algorithms without controlling for potential artifacts
can lead to inaccurate and misleading results.},
 bibtype = {article},
 author = {Sadeh, Avi and Acebo, Christine},
 journal = {Sleep Med Rev},
 number = {2}
}
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