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Gender difference of slow wave sleep in middle aged and elderly subjects
Author(s) -
Fukuda Noriko,
Honma Hiroshi,
Kohsaka Masako,
Kobayashi Riko,
Sakakibara Satoshi,
Kohsaka Shinobu,
Koyama Tsukasa
Publication year - 1999
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1046/j.1440-1819.1999.00508.x
Subject(s) - electroencephalography , audiology , spectral analysis , sleep (system call) , slow wave sleep , rapid eye movement sleep , significant difference , psychology , delta rhythm , sleep stages , eye movement , delta wave , medicine , physics , theta rhythm , psychiatry , polysomnography , neuroscience , quantum mechanics , spectroscopy , computer science , operating system
Sleep EEG of eight healthy males and eight females aged 54–72 years were recorded at their homes. The electroencephalograms were visually scored and analyzed by spectral analysis using the FFT method. There were no significant differences in sleep parameters except for a higher percentage of stage 3 + 4 in females. The spectral power of the delta band EEG was classified into two frequencies: 0.5–2 Hz and 2–4 Hz. The total amount of the delta band spectral power through the night was significantly larger in females. Periodic fluctuation of delta band power was observed in females along with non‐rapid eye movement–rapid eye movement cycles.