Document Detail


Relations between parameters of spectral power densities and deterministic chaos of heart-rate variability.
MedLine Citation:
PMID:  8964936     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To evaluate whether or not heart-rate variations (HRV) have both periodic and deterministic-chaotic properties in conscious and anaesthetized states, HRV of 9 rabbits were analysed by power spectral analysis and methods of deterministic chaos. In order to correlate these properties with the physiological structure of HRV, cholinergic and beta-adrenergic blockades and medullar transections were done. A predominant deterministic-chaotic structure of HRV with high fractal correlation dimension (CD) during conscious state changes to a more periodic structure and lower CD during general anaesthesia. The main periodic and deterministic-chaotic components of HRV are vagally mediated because of their strong reduction by cholinergic blockade, but not by beta-adrenergic blockade or medullar transection.
Authors:
U Zwiener; D Hoyer; B Lüthke; K Schmidt; R Bauer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the autonomic nervous system     Volume:  57     ISSN:  0165-1838     ISO Abbreviation:  J. Auton. Nerv. Syst.     Publication Date:  1996 Mar 
Date Detail:
Created Date:  1996-12-03     Completed Date:  1996-12-03     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8003419     Medline TA:  J Auton Nerv Syst     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  132-5     Citation Subset:  IM    
Affiliation:
Institute of Pathophysiology, University of Jena, Germany.
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MeSH Terms
Descriptor/Qualifier:
Animals
Female
Heart / drug effects
Heart Rate / physiology*
Male
Rabbits
Statistics as Topic
Time Factors

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