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The effects of age and gender on sleep EEG power spectral density in the middle years of life (ages 20-60 years old)The effects of age and gender on sleep EEG power spectral density were assessed in a group of 100 subjects aged 20 to 60 years. We propose a new statistical strategy (mixed-model using fixed-knot regression splines) to analyze quantitative EEG measures. The effect of gender varied according to frequency, but no interactions emerged between age and gender, suggesting that the aging process does not differentially influence men and women. Women had higher power density than men in delta, theta, low alpha, and high spindle frequency range. The effect of age varied according to frequency and across the night. The decrease in power with age was not restricted to slow-wave activity, but also included theta and sigma activity. With increasing age, the attenuation over the night in power density between 1.25 and 8.00 Hz diminished, and the rise in power between 12.25 and 14.00 Hz across the night decreased. Increasing age was associated with higher power in the beta range. These results suggest that increasing age may be related to an attenuation of homeostatic sleep pressure and to an increase in cortical activation during sleep.
Document ID
20040112450
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Carrier, J.
(Western Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine PA, United States)
Land, S.
Buysse, D. J.
Kupfer, D. J.
Monk, T. H.
Date Acquired
August 21, 2013
Publication Date
March 1, 2001
Publication Information
Publication: Psychophysiology
Volume: 38
Issue: 2
ISSN: 0048-5772
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: AG-15138
CONTRACT_GRANT: MH-30915
CONTRACT_GRANT: MH-24652
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Regulatory Physiology
Non-NASA Center
Clinical Trial

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