Actigraphy is the?

Actigraphy is the?

• A. Recording and analysis of the nondominant wrist movements
• B. Measurement and quantification of REM movements
• C. Recording of leg movements
• D. Home sleep testing

Answer: (A)

Actigraphy uses a wearable accelerometer placed on the nondominant wrist to continuously record movement. The device tracks activity over extended periods, and the data are analyzed to estimate sleep and wake periods, giving insight into daily sleep patterns and circadian rhythms. It doesn’t measure brain activity or REM-specific movements, nor does it directly assess leg movements or provide the respiratory data seen in home sleep testing. Placing the sensor on the nondominant wrist helps minimize artifact from routine dominant-hand activity, improving the reliability of the sleep-wake estimates.

Actigraphy uses a wearable accelerometer placed on the nondominant wrist to continuously record movement. The device tracks activity over extended periods, and the data are analyzed to estimate sleep and wake periods, giving insight into daily sleep patterns and circadian rhythms. It doesn’t measure brain activity or REM-specific movements, nor does it directly assess leg movements or provide the respiratory data seen in home sleep testing. Placing the sensor on the nondominant wrist helps minimize artifact from routine dominant-hand activity, improving the reliability of the sleep-wake estimates.