Document Detail

Heart-rate variability as a quantitative measure of hypnotic depth.
MedLine Citation:
PMID:  18058483     Owner:  NLM     Status:  MEDLINE    
The authors investigated whether heart-rate variability can serve as a device for real-time quantitative measurement of hypnotic depth. This study compared the continuous self-rated hypnotic depth (SRHD) of 10 volunteers with heart rate, amplitude, and frequency changes from a time-frequency analysis of heart-rate variability (HRV). The authors found significant linear relationships between SRHD and the high-frequency (HF) component of HRV. Specifically, SRHD was correlated negatively with the frequency of the HF component and positively with the amplitude of the HF component. Unexpectedly, the average temporal trend in SRHD fit well (R(2) = .99) to the step response of a first-order system with a 4-minute time constant. The findings suggest that the reactivity of the parasympathetic branch of the autonomic nervous system reflected in HRV could become part of a real-time, quantitative measure of hypnotic depth.
Solomon Gilbert Diamond; Orin C Davis; Robert D Howe
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The International journal of clinical and experimental hypnosis     Volume:  56     ISSN:  0020-7144     ISO Abbreviation:  Int J Clin Exp Hypn     Publication Date:  2008 Jan 
Date Detail:
Created Date:  2007-12-06     Completed Date:  2008-03-19     Revised Date:  2008-04-10    
Medline Journal Info:
Nlm Unique ID:  0376166     Medline TA:  Int J Clin Exp Hypn     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1-18     Citation Subset:  IM    
Harvard University, Cambridge, Massachusetts, USA.
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MeSH Terms
Heart Rate / physiology*
Models, Biological

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

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