title: Alpha-like EEG activity in non-REM sleep and the fibromyalgia (fibrositis) syndrome.
abstract: The occurrence and characteristics of alpha-like activity during non-REM (NREM) sleep were examined in 11 subjects suffering from non-inflammatory (non-rheumatoid) musculoskeletal pain--fibromyalgia ('fibrositis'), and in 15 symptom-free controls. Both groups claimed to be good sleepers. Mean percentage alpha-like activity in sleep stages 2, 3, 4 and for NREM as a whole were greatest for the fibromyalgia group, but not significantly different from those of the controls. Overlap in the distribution of NREM alpha-like activity in sleep between the two groups indicated that it is not directly related to musculoskeletal symptoms. Spectral analyses showed a frontal area prevalence of this (kappa?) activity in the fibromyalgia group.
authors.affiliation: Department of Human Sciences, Loughborough University, Leicestershire, U.K.
authors.forename: J A
authors.initials: JA
authors.lastname: Horne
authors.forename: B S
authors.initials: BS
authors.lastname: Shackell
mesh_terms: D000328:Adult; D000513:Alpha Rhythm; D004569:Electroencephalography; D005260:Female; D005356:Fibromyalgia / Q000503:physiopathology*; D006801:Humans; D008297:Male; D012894:Sleep Stages / Q000502:physiology*; D012895:Sleep, REM / Q000502:physiology; D013997:Time Factors