156
Views
0
CrossRef citations to date
0
Altmetric
Regular articles

Development and evaluation of a cardiac coherence index for sleep analysis

, , &
Pages 44-52 | Published online: 04 Mar 2020
 

Abstract

Cardiac coherence measurement is an established technology in biofeedback systems for stress release. Studies have typically been conducted with participants during ordinary waking consciousness, yet cardiac coherence during sleep may be even more important in illness prevention and health promotion. We investigated whether it was possible to develop an alternative effective technology: the Cardiac Coherence Index (CCI), for sleep analysis. The CCI is based on heart inter-beat interval spectral entropy and autonomic nervous system resonance analysis. We tested the hypothesis that the CCI could be a way to assess sleep quality and eventually as a tool to assess consciousness states during sleep. Our analysis suggests that high CCI corresponds to deep sleep stage, low CCI to awake state, and medium CCI to dream state. These findings further suggest that the CCI method is potentially a useful tool for the study of consciousness and as a home-based system for sleep management.

Acknowledgements

This work is based on research supported by the University of Zululand and the South African National Research Foundation (NRF). Any opinion, finding, conclusion, or recommendation expressed in this material is that of the author(s) and the NRF does not accept any liability in regard thereto.

Notes

1 The reason for choosing this duration of segment is that it coincides with gold standard polysomnography analysis.

2 The ANS resonant frequency is different in every person but always close to 0.1Hz. Ideally, we should measure for the individual resonant frequency of each person.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 53.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 168.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.