FROM: Dr. Catesby Ware
  TO: Mark Kopmann
SUBJ: Wristband Sleep Detector

Mark [WSD Project Manager],

I like your web page and I like your topic. Thanks for letting me know what is going on at ODU. Answers to your questions, as best that I can tell, are:

[ some content omitted for brevity ]

The best behavioral indicators of sleep onset we presently know of appear to be from wrist activity measures or eyelid closures. People move when awake and close their eyes when asleep. References to two review articles on actigraphy follow (Klosch G, Gruber G, Anderer P, Saletu B. Activity monitoring in sleep research, medicine and psychopharmacology. Wien Klin Wochenschr. 2001 Apr 17;113(7-8):288-95. Sadeh A, Hauri PJ, Kripke DF, Lavie P. The role of actigraphy in the evaluation of sleep disorders. Sleep. 1995 May;18(4):288-302.)

Best wishes on your project.

J. Catesby Ware, Ph.D.
Chief, Division of Sleep Medicine
Professor, Departments of Medicine & Psychiatry
Eastern Virginia Medical School