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Differences in electroencephalogram power densities between genuine narcolepsy and secondary narcolepsy
Author(s) -
Honma Hiroshi,
Kohsaka Masako,
Fukuda Noriko,
Kobayashi Riko,
Sakakibara Satoshi,
Koyama Tsukasa
Publication year - 2000
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.1440-1819.2000.00698.x
Subject(s) - narcolepsy , psychology , arousal , electroencephalography , audiology , excessive daytime sleepiness , cataplexy , psychiatry , sleep disorder , medicine , neuroscience , insomnia , modafinil
Diagnosing narcolepsy is not always simple. Some patients secondarily show narcoleptic tetrad through irregular sleep patterns or psychotic diseases. The power densities of daytime electroencephalograms in genuine narcolepsy and secondary narcolepsy were analysed and compared. Electroencephalogram power densities for a 6.5‐h period after waking in genuine narcoleptic patients were lower than those of secondary narcoleptic patients in the 11.0–12.5 Hz bands. Arousal levels may be lower in genuine narcoleptic patients than in secondary narcoleptic patients. Spectral analysis may be useful in clarifying differences between the two groups.