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Non-constraining sleep/wake monitoring system using bed actigraphy

Cited 30 time in Web of Science Cited 34 time in Scopus
Authors
Choi, Byoung Hoon; Seo, Jin Woo; Choi, Jong Min; Shin, Hong Bum; Lee, Joo Young; Jeong, Do Un; Park, Kwang Suk
Issue Date
2006-12-06
Publisher
Springer Verlag
Citation
Med Biol Eng Comput. 2007 Jan;45(1):107-14. Epub 2006 Dec 5.
Keywords
AdultHumansMiddle AgedMonitoring, Physiologic/instrumentation/*methodsMovementPolysomnographySensitivity and Specificity*Signal Processing, Computer-AssistedSleep/*physiologySleep Disorders/diagnosisSleep StagesSoftwareWakefulness/*physiology
Abstract
This paper introduces a new method, bed actigraphy (BACT) for user-friendly sleep-wake monitoring. BACT provides a non-intrusive acquisition of activity data, and in particular does not require that sensors be attached to the subject's body. The system consists of four load-sensing cells supporting the bed, an A/D converter, and a microcontroller with appropriate software. The performance of BACT was compared to that of standard polysomnography (PSG) recordings and wrist-worn actigraphy (ACT). Ten normal volunteers underwent overnight PSG recordings and were examined simultaneously with BACT and ACT. An automatic scoring algorithm scored each 30-s epoch of the BACT recordings for either 'Wake' or 'Sleep.' A sleep specialist manually scored the PSG recordings, and the results were divided into 'Wake' and 'Sleep' categories. The three methods showed a significant correlation when compared with in the contingency test. The mean epoch-by-epoch agreements between the BACT and PSG, ACT and PSG, and BACT and ACT recordings were 95.2, 92.9, and 94.3%, respectively. The mean absolute differences in sleep percentage (SP) between them were 1.8 +/- 0.82, 3.4 +/- 1.45, and 1.9 +/- 1.16 %, respectively. BACT differentiation of the 'Wake' and 'Sleep' stages proved to be sufficiently robust, and its results were comparable to PSG analysis. This finding supports the experimental and clinical value of bed-activity monitoring during sleep.
ISSN
0140-0118 (Print)
Language
English
URI
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=17146691

http://hdl.handle.net/10371/15065
DOI
https://doi.org/10.1007/s11517-006-0134-1
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College of Medicine/School of Medicine (의과대학/대학원)Biomedical Engineering (의공학전공)Journal Papers (저널논문_의공학전공)
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