The role of actigraphy in the study of sleep and circadian rhythms.

@article{AncoliIsrael2003TheRO,
  title={The role of actigraphy in the study of sleep and circadian rhythms.},
  author={Sonia Ancoli-Israel and Roger Cole and Cathy A. Alessi and Mark J. Chambers and William H. Moorcroft and Charles P. Pollak},
  journal={Sleep},
  year={2003},
  volume={26 3},
  pages={
          342-92
        }
}
In summary, although actigraphy is not as accurate as PSG for determining some sleep measurements, studies are in general agreement that actigraphy, with its ability to record continuously for long time periods, is more reliable than sleep logs which rely on the patients' recall of how many times they woke up or. [] Key Result Results of actigraphic recordings correlate well with measurements of melatonin and of core body temperature rhythms. Activity records also show sleep disturbance when sleep is…

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References

SHOWING 1-10 OF 208 REFERENCES

How accurately does wrist actigraphy identify the states of sleep and wakefulness?

TLDR
Actigraphy may be useful for measuring circadian period and sleep-wake consolidation and has face validity as a measure of rest/activity, but low PV's and overestimation of sleep currently disqualify actigraphy as an accurateSleep-wake indicator.

The role of actigraphy in sleep medicine.

TLDR
The validity, reliability and limitations of actigraphy for documenting sleep-wake patterns have been addressed and the use of computer scoring algorithms without controlling for potential artifacts can lead to inaccurate and misleading results.

Direct comparison of two widely used activity recorders.

TLDR
Two widely used recorders are compared: the MotionLogger from Ambulatory Monitoring, Inc (AM) and the Gaehwiler (G), worn together on the same wrist for periods averaging 41.5 hours by five members of a research team.

Wrist actigraphic measures of sleep in space.

TLDR
Actigraphy worked well in space both as a way of detecting bedtimes and waketimes, and as an indicant of sleep restlessness.

The role of actigraphy in the evaluation of sleep disorders.

TLDR
The data suggest that actigraphy, despite its limitations, may be a useful, cost-effective method for assessing specific sleep disorders, such as insomnia and schedule disorders, and for monitoring their treatment process.

Wrist actigraphy in insomnia.

TLDR
Actigraphy is recommended as an additional tool in the clinical evaluation of insomnia, but it is believed that in complex cases it should be combined with 1 PSG night in the sleep disorders center.

Actigraphy and leg movements during sleep: a validation study.

TLDR
Actigraphy substantially underestimated leg electromyographic activity and therefore could not be used routinely for diagnostic purposes, and because error scoring did not undergo significant changes across the two nights, actigraphy may be used for follow-up evaluation.

Actigraphy and insomnia: a closer look. Part 1.

TLDR
W wrist actigraphy does show some potential for assessing the night-to-night variability of a given individual's sleep, suggesting that it may be most useful for assessing longitudinal changes within a treatment program or experimental protocol.
...