Actigraphy (Wrist, for Measuring Rest/Activity Patterns and Sleep)
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Actigraphy is a method of objective sleep assessment in which sleep/wake status is estimated from bodily movements, typically of the wrist.
Background and Use
Actigraphy is a common alternative to laboratory polysomnography (PSG) for the objective assessment of sleep/wake patterns, based on the observation that the amount of bodily movement differs between sleep and wakefulness. Although initially developed in the 1970s, there has been an exponential increase in the use and development of actigraphy over the past 15 years. Due to technological developments, actigraphs are now unobtrusive (similar in size and weight to a wrist watch) and inexpensive, capable of collecting data for multiple weeks, and able to provide rapid feedback on sleep patterns due to automated software algorithms. In addition, many actigraphs now record ambient light exposure and have the ability to mark the timing of specific events...
References and Readings
- Stone, K. L., & Ancoli-Israel, S. (2011). Actigraphy. In M. H. Kryger, T. Roth, & W. C. Dement (Eds.), Principles and practice of sleep medicine (5th ed., pp. 1668–1675). St. Louis, MO: Elsevier.Google Scholar