What is actigraphy in sleep study?

What is actigraphy in sleep study?

Actigraphy is a non-invasive technique used to assess cycles of activity and rest over several days to several weeks. Your doctor may ask you to wear an actigraph for a period of time to get an objective measurement of your sleep schedule.

Can actigraphy diagnose sleep disorders?

Actigraphy is a type of wearable sleep test that tracks your movements1 to analyze when you are asleep and when you are awake. This device can help doctors diagnose certain sleep disorders2 and monitor the treatment progress of people who have already been diagnosed with a disorder.

What is a actigraphy test?

Actigraphy is a validated method of objectively measuring sleep parameters and average motor activity over a period of days to weeks using a noninvasive accelerometer [1-6]. The accelerometer is housed in a small device that is worn like a wristwatch.

What does an actigraphy watch measure?

Actigraphy is a portable wristband that measures movement. The absence of movement over a certain time period is used as a surrogate marker of sleep, and the presence of movement over a certain time period is used as a surrogate for wakefulness. Some devices also measure ambient light exposure.

How accurate is actigraphy?

This validation quantifies strengths and weaknesses of actigraphy as a tool measuring sleep in clinical and population studies. Overall, the participant-specific accuracy is relatively high, and for most participants, above 80%.

Is actigraphy reliable?

Previous studies have found up to 28% missing data in weekly actigraphic recordings.

Does actigraphy measure heart rate?

ActiGraph wGT3X-BT monitors are powered by Bluetooth® Smart technology and support a variety of wireless features, including heart rate monitoring, proximity detection, and communication with ActiGraph’s suite of mobile applications for iOs and Android devices.

Which is more invasive actigraphy or polysomnography?

Whereas PSG is often performed in a clinic or laboratory setting to record various physiological characteristics over a limited period of time, actigraphy is a non-invasive method of capturing body movements that can be used over longer periods of time in the natural sleep setting of the patient.