@article{oai:shiga-med.repo.nii.ac.jp:00004005,
 author = {加根村, 隆 and KADOTANI, Hiroshi and 角谷, 寛 and 松尾, 雅博 and 増田, 史 and 藤原, 幸一 and 大平, 雅子 and 山田, 尚登 and KANEMURA, Takashi and KADOTANI, Hiroshi and 角谷, 寛 and MATSUO, Masahiro and MASUDA, Fumi and FUJIWARA, Koichi and OHIRA, Masako and YAMADA, Naoto},
 issue = {2},
 journal = {睡眠口腔医学, Journal of Oral and Sleep Medicine},
 month = {Apr},
 note = {pdf, Objective:
All-night polysomnography （PSG） is a useful tool for evaluating sleep quality. However, it requires subjects to sleep in an unfamiliar environment, which can influence sleep quality. Moreover, PSG is labor-intensive, timeconsuming, and expensive. We evaluated a portable two-channel electroencephalogram （EEG） monitoring system and compared the signals obtained from the device with those of simultaneously recorded full PSG., Methods:
Signals obtained from two-channel EEG were comparing with simultaneously recorded full PSG signals. Sleep stages were scored using the American Academy of Sleep Medicine Manual for Scoring Sleep 2007. The epochby-epoch percent agreement and Cohen’s kappa coefficient were used for agreement evaluation of sleep stage in both devices., Results:
The participants were healthy Japanese volunteers （mean （standard deviation）: age: 20.9 （1.8） years; seven women and nine men）. In epoch-by-epoch comparison, the average agreement and kappa value of sleep stages between two-channel EEG and PSG were 0.83 （0.04） and 0.75 （0.05）, respectively. Kappa coefficients showed strong agreement for stage R （REM: rapid eye movement）, stage W （wake）, stage N3 （non-REM: NREM 3）, and stage N2 （NREM 2）（0.86（0.09）, 0.76（0.12）, 0.74（0.15） and 0.73（0.06）, respectively） and weak agreement for stage N1（NREM 1）（0.44（0.13））., Conclusion:
These results demonstrate that two-channel EEG facilitates home sleep monitoring and exhibits acceptable agreement with PSG. Therefore, this tool may be suitable for use in epidemiological and intervention studies., Journal Article},
 pages = {101--108},
 title = {Evaluation of a portable two-channel electroencephalogram monitoring system to analyze sleep stages},
 volume = {2},
 year = {2016},
 yomi = {カドタニ, ヒロシ and カドタニ, ヒロシ}
}