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10(1) >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10466/2822

Title: 主観的睡眠感と睡眠脳波の関連
Other Titles: A relationship between subjective sleep and electroencephalograph in sleep
Authors: 高辻, 功一
古賀, 輝美
和田, 恵美子
勝部, 晃子
新田, 紀枝
井上, 智子
青山, ヒフミ
Author's alias: Takatsuji, Koichi
Koga, Terumi
Wada, Emiko
Katsube, Akiko
Nitta, Norie
Inoue, Tomoko
Aoyama, Hifumi
Keywords: 睡眠感
脳波
睡眠環境
Issue Date: 1-Mar-2004
Publisher: 大阪府立看護大学
Citation: 大阪府立看護大学紀要. 2004, 10(1), p.51-58
Abstract: 睡眠感は生活環境,睡眠時間,睡眠の深さで変化する。睡眠感の客観的指標を得るために,主観的睡眠感と睡眠脳波の関連について健康な女子学生 (19~21歳) を対象に実験的研究を行った。充分な睡眠感が得られたと回答した被験者の脳波では,入眠潜時5-10分で,その後に,δ波とθ波のパワースペクトルの増加が起こった。一方,不充分な睡眠感と回答した被験者では,入眠潜時が長く,δ波とθ波のパワースペクトルの増加は小さかった。入眠潜時が長くなると,人々は眠れなかった・寝つかれないと感じ,睡眠中にδ波とθ波の出現が遅く,少ないと熟睡感が得られないと感じる。これらの結果から,人々が述べる主観的睡眠感はその人の睡眠の状態をかなり正確に表現していると考えられる。また,寝室環境が変化した場合,睡眠状態が変化し,環境への順応性に個人差があった。
A feeling of sleep is changed by environment, sleeping time, and depth of sleep. We investigated a relationship between subjective sleep and electroencephalograph (EEG) in sleep in 13 healthy young women; 19-21 years of age. The feeling of subjective sleep was described on questionnaire and the physiological sleep was determined by EEG in the experimental room. The EEG activity was recorded from the central leads with reference to the ear lobes. The spectral activity was integrated into six EEG bands; delta (2-4 Hz), theta (4-8 Hz), alpha 1 (8-10 Hz), alpha 2 (10-13 Hz), beta 1 (13-20 Hz), and beta 2 (20-30 Hz). The EEG of the women who acquired good sleep showed that power spectra of the delta and theta bands were increased in 10 minutes after the onset of sleep. On the other hand, the EEG of the women acquired bad sleep showed that power spectra of the delta and theta bands were not increased during the hyponagogic period. The subjective feeling in sleep was well agreement with the increase of the delta and theta bands. This study suggests that the feeling of sleep is dependent on the arrival time of stages 1 and 2 after the onset of sleep.
URI: http://hdl.handle.net/10466/2822
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