Document Detail

Autonomic interactions and chronotropic control of the heart: heart period versus heart rate.
MedLine Citation:
PMID:  8854749     Owner:  NLM     Status:  MEDLINE    
Autonomic control of the heart varies more linearly with heart period than with rate. Relative linearity confers a greater independence of basal autonomic activation and heart period changes. Thus, heart period appears to be more appropriate for characterizing cardiac phenomena such as autonomic interactions that involve significant baseline shifts. Simulated and published empirical data were used to demonstrate the importance of the chronotropic metric for characterizing autonomic interactions. Simulations revealed a significant autonomic interaction when heart rate, but not heart period, was the chronotropic metric. Published heart rate data also show a substantial autonomic interaction, whereas heart period data do not. These findings suggest that the choice of chronotropic metric can overstate the extent of autonomic interactions on cardiac chronotropic function.
K S Quigley; G G Berntson
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Psychophysiology     Volume:  33     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  1996 Sep 
Date Detail:
Created Date:  1996-11-27     Completed Date:  1996-11-27     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  605-11     Citation Subset:  IM    
Department of Psychology, Pennsylvania State University, University Park 16802, USA.
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MeSH Terms
Autonomic Nervous System / physiology*
Heart Rate / physiology*
Time Factors
Vagus Nerve / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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