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ID 909
file
title alternative
Effects of self-awakening on sleep structure and sleep inertia during or after the short nap
creator
Kaida, Kousuke
Hori, Tadao
subject
午後の眠気
短時間仮眠
自己覚醒
睡眠慣性
脳波段階
post lunch dip
a short nap
self-awakening
sleep inertia
Hori's EEG stage
NDC
Medical sciences
abstract
本研究の目的は, 短時期仮眠における自己覚醒の企図が, 睡眠構造および睡眠慣性に及ぼす影響を検討することである。実験は, 自分で目覚める自己覚醒条件と,実験者が強制的に覚醒させる強制覚醒条件の参加者内比較計画で行った。覚醒水準の評価には, 聴覚オドボール課題により算出された事象関連電位のP300と課題正反応時間,Visual Analog Scale (Vas)による主観的覚醒水準評定値を用いた。睡民構造の詳細な検討のために,Hori et al. (1994)の脳波段階判定(9段階)を用いた。実験参加者は,大学生・大学院生14名であった。実験参加者は,4minの聴覚オドボール課題と1minのVAS評定からなる計5分間の課題を2セッション(計10分間)行った。その後,約20分間の仮眠をとり,覚醒後に同様の課題を6セッション(計30分間)行った。本研究の結果,自己覚醒を用いて出眠した場合には,強制覚醒の場合と比べて,P300振幅は大きくなり,主観的眠気は低減していた。また,自己覚醒を意図した場合には,睡眠構造が浅くなる傾向があった。これらの結果から,強制覚醒よりも自己覚醒をもちいた仮眠が,午後の眠気を抑える方法として有効であることが示された。(518語)
abstract
The aim of this study was the investigation of the effects of self-awakening on sleep inertia and sleep structure at the short nap. The participants were take part in the self-awakening and forced-awakening condition. In the self-awakening condition, participant woke up by themselves. However, experimenter in the forced-awakening condition waked participants up. The physiological arousal level and subjective sleepiness were evaluated by P300 of the event related potential (ERP) and visual analog scale (VAS). For evaluating the sleep structure elaborately, we used the Hori's EEG stages. Participants were 14 healthy college students. They participated the task consist of auditory oddball task (4 min) and VAS rating (1 min). Participant carried out two sessions (10 min) before the nap. Thereafter, they took a short nap around 20 min. After the nap, they carried out six sessions (30 min) again. P300 amplitude was lower after forced -awakening than self-awakening. On the other hand, subjective sleepiness was greater after the forced-awakening than self-awakening. And sleep structure was deeper during the forced-awakening than self-awakening. Those results suggest that a short nap with self-awakening was more useful than with forced-awakening.
journal title
Memoirs of the Faculty of Integrated Arts and Sciences, Hiroshima University. IV, Science reports
volume
Volume 27
start page
1
end page
11
date of issued
2001-12
publisher
広島大学総合科学部
contributor
国立情報学研究所
date of created
2006-03-21
issn
1340-8364
ncid
SelfDOI
language
jpn
nii type
Departmental Bulletin Paper
HU type
Departmental Bulletin Papers
DCMI type
text
format
application/pdf
text version
publisher
department
Graduate School of Integrated Arts and Sciences
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