Polysomnographic and quantitative EEG analysis of subjects with long-term insomnia complaints associated with mild traumatic brain injury.

Polysomnographic and quantitative EEG analysis of subjects with long-term insomnia complaints associated with mild traumatic brain injury. Research Abstract Details 

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Polysomnographic and quantitative EEG analysis of subjects with long-term insomnia complaints associated with mild traumatic brain injury. Abstract Text:

Benjamin R Williams,Stanley E Lazic,Robert D Ogilvie,

OBJECTIVE: The aims of this study were (1) to characterise the extent and nature of disrupted sleep in individuals with long-term sleep complaints subsequent to mild traumatic brain injury (MTBI), and (2) to determine whether sleep disturbances in MTBI subjects were more characteristic of psychophysiological, psychiatric, or idiopathic insomnia. METHODS: Nine MTBI patients (27.8 months post-injury; SD=15.5 months) and nine control subjects underwent polysomnographic testing and completed self-report questionnaires on sleep quality. Power spectral (FFT) analysis of the sleep onset period was conducted, with both the power and variability in power being quantified. RESULTS: Individuals with MTBI exhibited long-term sleep difficulties, along with various cognitive and affective abnormalities. The MTBI group had 4% less efficient sleep (p=0.019), shorter REM onset latencies (p=0.011), and longer sleep onset latencies, although the latter were highly variable in the MTBI group (F-test: p=0.012). FFT analysis revealed greater intra-subject variability in the MTBI group in sigma, theta, and delta power during the sleep onset period. CONCLUSIONS: MTBI patients with persistent sleep complaints differ significantly from controls on a number of electrophysiological outcomes, but could not be easily classified into existing insomnia subtypes. SIGNIFICANCE: Sleep disturbances can persist well after the injury in a subset of patients with MTBI.

Polysomnographic and quantitative EEG analysis of subjects with long-term insomnia complaints associated with mild traumatic brain injury. Publishing Authors By Initials

BR Williams,SE Lazic,RD Ogilvie,

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Polysomnographic and quantitative EEG analysis of subjects with long-term insomnia complaints associated with mild traumatic brain injury. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Clinical neurophysiology : official journal of the

VOLUME: 119

Page Numbers: 429-38

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ISSN: 1388-2457

DAY: 24

MONTH: Feb

YEAR: 2008

Polysomnographic and quantitative EEG analysis of subjects with long-term insomnia complaints associated with mild traumatic brain injury. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Polysomnographic and quantitative EEG analysis of subjects with long-term insomnia complaints associated with mild traumatic brain injury.

AFFILIATION: Department of Psychology, Brock University, St. Catharines, Ont., Canada L2S 3A1.

Country: Netherlands

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MEDLINETA: Clin Neurophysiol

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