Document Detail

Hypnotizability-dependent modulation of the changes in heart rate control induced by upright stance.
MedLine Citation:
PMID:  18355648     Owner:  NLM     Status:  MEDLINE    
Subjects with high (Highs) and low (Lows) susceptibility to hypnosis show differences in the sensory-motor integration for postural control and in the cardiovascular response to stress and experimental pain. Aim of the experiment was to assess whether the cardiac response to gravity-related stimulation depending on changes in the body position were different in the two groups. Thus, heart rate (HR) and heart rate variability (HRV) were evaluated in sitting and upright position in Highs and Lows. Position-related HRV changes were studied in the time (statistical indexes, Poincaré Plot) and frequency (spectral analysis) domain. Results indicated that upright stance was associated with similar changes in heart rate and different modulation of HRV in the two groups. The association of time and frequency domain analyses allowed hypothesizing different control mechanisms as responsible for the cardiac response to upright stance in Highs and Lows, likely due to a different role of the Very Low Frequency (VLF) spectral component of HRV in the two groups. The results are in line with previous findings indicating a natural protection of Highs against cardiovascular events and suggest that the Highs' cardiac function might be less impaired by microgravity than the Lows' one.
Enrica L Santarcangelo; Rita Balocchi; Eliana Scattina; Diego Manzoni; Luca Bruschini; Brunello Ghelarducci; Maurizio Varanini
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Publication Detail:
Type:  Comparative Study; Controlled Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-12-18
Journal Detail:
Title:  Brain research bulletin     Volume:  75     ISSN:  0361-9230     ISO Abbreviation:  Brain Res. Bull.     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-03-21     Completed Date:  2008-07-10     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7605818     Medline TA:  Brain Res Bull     Country:  United States    
Other Details:
Languages:  eng     Pagination:  692-7     Citation Subset:  IM    
Department of Human Physiology, University of Pisa, Via San Zeno 31, Pisa, Italy.
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MeSH Terms
Analysis of Variance
Electrocardiography / methods
Heart Rate / physiology*
Hypnosis / methods*
Postural Balance / physiology*
Posture / physiology*
Time Factors

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

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