Patricia Alpert and colleagues (2011), state that fifty to seventy million Americans have chronic sleep and wakefulness disorders. Those most affected are women and ethnically are non-Hispanic Blacks compared with all other ethnic adults. According to the National Sleep Foundation, adults need an average of seven to nine hours of sleep per night. However, as a general rule the length of sleep varies per individual.
Technological advancements such as the electroencephalograph (EEG), that can measure activity of the sleeping brain, have facilitated various theories to explain the necessity of and the purpose of sleep. Sleep studies measure brain waves (EEG), eye movements (EOG), and muscle skeletal activity (EMG) using a polysomnography.
We experience two phases of sleep which repeat themselves every ninety to one hundred and ten minutes, achieving approximately five complete cycles per night. The phases are non- rapi...
... middle of paper ...
...an, L., Nadaraja, D., Onen, F., & Richards, K. C. (2011). Perceived effectiveness of diverse sleep treatments in older adults. Journal Of The American Geriatrics Society, 59(2), 297-303. doi:10.1111/j.1532-5415.2010.03247.x
Kyle, S. D., Espie, C. A., & Morgan, K. (2010). “… Not just a minor thing, it is something major, which stops you from functioning daily”: Quality of life and daytime functioning in insomnia. Behavioral Sleep Medicine, 8(3), 123-140. doi:10.1080/15402002.2010.487450
Siddique, M. I., Mahmud, I., & Siddique, R. M. (2010). Obesity and sleep disorders: Implications for bariatric patients. Bariatric Nursing And Surgical Patient Care, 5(1), 75-79. doi:10.1089/bar.2009.9937
Vandekerckhove, M., & Cluydts, R. (2010). The emotional brain and sleep: An intimate relationship. Sleep Medicine Reviews, 14(4), 219-226. doi:10.1016/j.smrv.2010.01.002
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