2004 Fiscal Year Final Research Report Summary
Monitoring of Biosignals during Sleeping and Estimation of Sleep State for the its Control
| Project/Area Number |
15500393
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Rehabilitation science/Welfare engineering
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| Research Institution | Faculty of Science and Engineering, Ritsumeikan University |
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Principal Investigator |
MAKIKAWA Masaaki Ritumeikan University, Faculty of Science and Engineering, Professor, 理工学部, 教授 (70157163)
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| Co-Investigator(Kenkyū-buntansha) |
IIDA Takeo Ritumeikan University, Faculty of Information Science, Professor, 情報理工学部, 教授 (80268151)
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| Project Period (FY) |
2003 – 2004
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| Keywords | Sleep / Bed-clothes / Temperature / Heart variability / Respiration / Autonomous nerve / Biosignal / Interpretation / 生体リズム |
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| Research Abstract |
The purpose of this study is to develop a system which can monitor the sleep state all night, and make sleep thermal environment optimum according to the sleep state. In this study, following two agenda were examined ; 1) development of new sleep state estimation method using physiological measurement in place of conventional sleep polygraph measurement, 2) examination of the influence of temperature on the sleep state.
As to the 1^<st> agenda we used chaotic analysis of heart rate variability during sleeping. Three indices of the KS entropy, the maximum Liapunov index and the KS entropy were examined and it was shows that the KS entropy and the maximum Liapunov index significantly increased during REM sleep in comparison with SWS sleep and it was proven that chaos analysis is useful to catch the change of sleep state.
As to the 2^<nd> agenda we examined the change in sleep state by changing the temperature inside bed clothes. The result showed that the temperature change in the bed affected sleep state.
These results show that more comfortable sleep can be attained by changing the temperature inside bed clothes according to sleep state. In addition, wake up in the halfway of sleep was clarified to be carried out by the change of temperature, and it was shows that total sleep control possible is possible.
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Research Products
(16 results)
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[Journal Article] Jogging Support System with Portable Monitoring Device and Health Manage Software2004
Author(s)
M.Makikawa, T.Isaka, T.Iida, S.Asajima, K.Tsukise, N.Shiozawa, K.Nishiyama, S.Wada, K.Nakayama, M.Horiguchi, H.Torimoto
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Journal Title
MEDINFO 2004,(M.Fieschi et al.(Eds))(Amsterdam : IOS Press. 2004)
Pages: 1260-1263
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Jogging Support System with Portable Monitoring Device and Health Manage Software2004
Author(s)
Masaaki Makikawa, Tadao Isaka, Takeo Iida, Shuzo Asajima, Kanji Tsukise, Narihiro Shiozawa, Kento Nishiyama, Sumio Wada, Kyoichiro Nakayama, Michiyuki Horiguchi, Hitoshi Torimoto
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Journal Title
MEDINFO 2004 (M.Fieschi et al.(Eds)) (Amsterdam, ISO Press.)
Pages: 1260-1263
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Portable Jogging Monitor Device and its Application for Health Management2003
Author(s)
Masaaki Makikawa, Tadao Isaka, Takeo Iida, Shuzo Asajima, Kanji Tsukise, Narihiro Shiozawa, Kento Nishiyama, Sumio Wada, Kyoichiro Nakayama, Michiyuki Horiguchi, Hitoshi Torimoto
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Journal Title
Proc. of IEEE EMBS (CDROM)
Description
「研究成果報告書概要(欧文)」より
