A Passive and Portable System for Monitoring Heart Rate and Detecting Sleep Apnea and Arousals
Majd Alwan, David C. Mack, Beverely Turner, Paul Suratt, Robin A. Felder  - May, 2007

Medical Automation Research Center

Sleep deprivation is a common problem in the industrialized world. The National Sleep Foundation (NSF) reports that for adults to function properly they should obtain 7-9 hours or more of sleep per night [1]. According to the 2005 “Sleep in America” poll conducted by the NSF, about 26% of adults are getting at least 8 hours of sleep a night during the week, while 49% do so on weekends.

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