Document Detail

Nonlinear relationship between electrodermal activity and heart rate variability in patients with acute schizophrenia.
MedLine Citation:
PMID:  21496056     Owner:  NLM     Status:  Publisher    
We investigated to what degree tonic skin conductance levels (SCL) and cardiac autonomic dysfunction are interrelated in schizophrenia. Heart rate variability (HRV) and SCL were simultaneously assessed in 18 unmedicated patients and 18 controls matched for age, sex, weight, and smoking habits. For comparison to prior studies, phasic sympathetic skin responses (SPR) were also recorded. Compared to controls, patients had prolonged SPR latency and reduced SPR amplitude with a right-greater-than-left asymmetry, which was inversely correlated with positive symptoms. An autonomic imbalance was reflected in linear and nonlinear measures of HRV and increased SCL. Patients showed a stronger nonlinear association between SCL and heart rate than controls. HRV and SCL findings were strongly affected by group differences in breathing rate. Stronger HRV-SCL coupling in patients may suggest augmented sympathetic modulation in schizophrenia.
Tobias Rachow; Sandy Berger; Michael Karl Boettger; Steffen Schulz; Salvador Guinjoan; Vikram K Yeragani; Andreas Voss; Karl-Jürgen Bär
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-15
Journal Detail:
Title:  Psychophysiology     Volume:  -     ISSN:  1540-5958     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Society for Psychophysiological Research.
Pain & Autonomics-Integrative Research (PAIR), Department of Psychiatry and Psychotherapy, University Hospital Jena, Jena, Germany Institute of Physiology, University Hospital Jena, Jena, Germany Department of Medical Engineering and Biotechnology, University of Applied Sciences, Jena, Germany Departments of Neurology and Psychiatry, FLENI, Buenos Aires, Argentina Department of Psychiatry, University of Alberta, Edmonton, Alberta, Canada.
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