Document Detail

Complex demodulation of cardiac interbeat intervals: increased cardiac sympathovagal interaction during human sexual activity.
MedLine Citation:
PMID:  14739691     Owner:  NLM     Status:  MEDLINE    
In this study, we analyzed heart rate variability during sexual activity using complex demodulation, which is a useful technique to study continuous changes in different frequency bands over short periods of time. Complex demodulation has the advantage of having higher time resolution compared to spectral analysis. We quantified the low frequency (LF: 0.04-0.15 Hz) and high frequency (HF: 0.15-0.5 Hz) amplitudes, and the LF/HF ratio before, during, and after the occurrence of orgasm. LF power is dually mediated by cardiac sympathetic and parasympathetic systems while HF power is mainly influenced by cardiac vagal function. We found a significant increase of cardiac sympathovagal interaction (LF/HF ratios) during the phase of orgasm. These findings are discussed in light of normal sexual physiology and the effect of sex on cardiac autonomic function in patients with heart disease, such as myocardial infarction.
Vikram K Yeragani; Robert Pohl; Richard Balon
Publication Detail:
Type:  Clinical Trial; Journal Article    
Journal Detail:
Title:  Archives of sexual behavior     Volume:  33     ISSN:  0004-0002     ISO Abbreviation:  Arch Sex Behav     Publication Date:  2004 Feb 
Date Detail:
Created Date:  2004-01-23     Completed Date:  2004-05-12     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  1273516     Medline TA:  Arch Sex Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  65-9     Citation Subset:  IM    
Department of Psychiatry and Behavioral Neurosciences, Wayne State University School of Medicine, Detroit, Michigan, USA.
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MeSH Terms
Coitus / physiology*
Heart / innervation
Heart Rate* / physiology
Orgasm / physiology*
Reference Values
Sympathetic Nervous System / physiology
Time Factors
Vagus Nerve* / physiology

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