1. Wrist Actigraphy CHEST
Jennifer L. Martin, PhD, Alex D. Hakim, MD 
CHEST 
Volume 139, Issue 6, Pages (June 2011)
DOI: /chest
Copyright © 2011 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Example of a double-plot of actigraphy data. This plot shows nights of data aligned one above the next. This 5-day recording is from a 92-year-old female resident of an assisted-living facility and shows a pattern of abnormally increased activity during the nighttime hours (indicated by arrows).
CHEST  , DOI: ( /chest )
Copyright © 2011 The American College of Chest Physicians Terms and Conditions

3. Figure 2
Sample instructions and daily patient log for use with wrist actigraphy.
CHEST  , DOI: ( /chest )
Copyright © 2011 The American College of Chest Physicians Terms and Conditions

4. Figure 3
Seven-day recording of a 66-year-old woman during hospitalization following ankle injury. Arrows indicate periods when lights were left on after the patient indicated “trying to fall asleep” and occasions when lights were turned on at night. During the day, light levels reached no higher than 450 lux during the 1-week recording period, confirming that the patient did not go outdoors on any occasion.
CHEST  , DOI: ( /chest )
Copyright © 2011 The American College of Chest Physicians Terms and Conditions