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Instantaneous monitoring of sleep fragmentation by point process heart rate variability and respiratory dynamics

Citi, L and Bianchi, MT and Klerman, EB and Barbieri, R (2011) 'Instantaneous monitoring of sleep fragmentation by point process heart rate variability and respiratory dynamics.' Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS. 7735 - 7738. ISSN 1557-170X

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Abstract

We present a novel, automatic point-process approach that is able to provide continuous, instantaneous estimates of heart rate variability (HRV) and respiratory sinus arrhythmia (RSA) in long duration data recordings such as those during an entire night of sleep. We analyze subjects with and without sleep apnea who underwent diagnostic polysomnography. The proposed algorithm is able to quantify multi-scale high time resolution autonomic signatures of sleep fragmentation, such as arousals and stage transitions, throughout an entire night. Results demonstrate the ability of our methods to track fast dynamic transitions from sleep to wake and between REM sleep and other sleep stages, providing resolution details not available in sleep scoring summaries. An automatic threshold-based procedure is further able to detect brief arousals, with the instantaneous indices characterizing specific arousal dynamic signatures. © 2011 IEEE.

Item Type: Article
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
R Medicine > R Medicine (General)
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Jim Jamieson
Date Deposited: 29 Mar 2014 16:29
Last Modified: 17 Aug 2017 17:53
URI: http://repository.essex.ac.uk/id/eprint/8801

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