Editing Delta wave (section)

===Fibromyalgia===

Patients with [[fibromyalgia]] often report unrefreshing sleep. A study conducted in 1975 by Moldovsky ''et al.'' showed that the delta wave activity of these patients in stages 3 and 4 sleep were often interrupted by [[alpha wave]]s. They later showed that depriving the body of delta wave sleep activity also induced [[musculoskeletal]] pain and [[Fatigue (medical)|fatigue]].<ref>Nezu, Arthur M. ., Christine Maguth. Nezu, Pamela A. . Geller, and Irving B. . Weiner. Handbook of Psychology. New York: Wiley, 2003. Print.</ref>