Accession Number:

ADA273739

Title:

A Comparison of Sleep Scored from Electroencephalography to Sleep Scored by Wrist Actigraphy

Descriptive Note:

Technical rept. Nov 1989-Feb 1990

Corporate Author:

ARMY AEROMEDICAL RESEARCH LAB FORT RUCKER AL

Report Date:

1993-09-01

Pagination or Media Count:

35.0

Abstract:

During military operations, it as been found that soldiers often are required to work for long periods o time without rest. In order to assist commanders in determining how much rest soldiers receive, various methods of monitoring activity have been used. One unobtrusive method is to use wrist activity monitors WAMs to determine how long soldiers are required to work with little or no sleep. This study compared data from traditionally scored sleep using electroencephalographs EEGs to data from WAMs to determine the ability of WAMs to measure sleep. Based on this limited comparison study, it appears that the WAM is a good instrument to use to estimate sleep time when an EEG is not possible. The percent agreement between WAM sleep time and EEG sleep time is very high, with an average of almost 89 percent. The error tended to be in the direction of overestimation of sleep time by the WAM. Also, the current method of scoring using a set cutoff of counts is a suitable method. However, an overestimation of sleep most likely will occur when this method is used. Therefore, whenever actigraphs are used, a conservative interpretation of the data is to discuss rest time instead of sleep time. ln addition, the quality of sleep as determined by normal EEG sleep staging cannot be assessed by the WAM Sleep, WAM, Wrist monitor, Activity.

Subject Categories:

  • Personnel Management and Labor Relations
  • Anatomy and Physiology
  • Stress Physiology
  • Test Facilities, Equipment and Methods
  • Military Operations, Strategy and Tactics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE