Hisanaga A, Tsutsumi M, Yasui S, Fukuda H, Tachibana H, Hagino H, Okabe A, Mita T, Saitoh O, Kurachi M
Department of Neuropsychiatry, Toyama Medical and Pharmaceutical University, Japan.
Psychiatry Clin Neurosci. 1998 Apr;52(2):206-7. doi: 10.1111/j.1440-1819.1998.tb01033.x.
We report a patient, a 30-year-old male Japanese-Brazilian migrant construction worker, suffering from excessive daytime sleepiness for at least 6 months. Electroencephalogram recordings during his waking states showed that 10-Hz and 60-microV alpha activity was present prominently in the occipital regions. From the multiple sleep latency test, it was found that stages 1-2 NREM sleep episodes appeared repetitively without any REM episodes, and that the mean sleep latency was 10.2 min. These findings support the diagnosis that this patient suffers from subwakefulness syndrome.
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