Document Detail

Hemispheric asymmetry in non-linear interdependence of EEG in post-traumatic stress disorder.
MedLine Citation:
PMID:  22353322     Owner:  NLM     Status:  MEDLINE    
AIM: While volumetric and metabolic imaging on post-traumatic stress disorder (PTSD) patients has been intensively performed, few studies using electroencephalograms (EEG) have been done as yet. The aim of the present study was to investigate abnormalities in functional connectivity of cortical networks in PTSD.
METHODS: Non-linear interdependence (NI), a measure of bidirectional, non-linear information transmission between two time series, was used. Resting EEG were recorded for 18 PTSD patients and 18 sex-matched healthy subjects on 16 channels with their eyes closed.
RESULTS: The NI patterns in PTSD patients were hemisphere asymmetric: an increase in NI in the fronto-parieto-temporal regions of the left hemisphere (F7, F3, T3, C3, T5 and P3) and a decrease in the fronto-parieto-occipital regions of the right hemisphere (F4, C4, P4 and O2). The non-linearity of NI in EEG, estimated from the surrogate data method, exhibited an increase in the PTSD patients as compared with that of healthy subjects, particularly in the left hemispheric cortex.
CONCLUSION: Abnormal functional connectivity in PTSD can be assessed using NI, a measure of multi-channel EEG.
Jinho Kim; Jeong-Ho Chae; Hee-Kyoung Ko; Charles-Francois Vincent Latchoumane; Aveek Banerjee; Donald J Mandell; Christina W Hoven; Jaeseung Jeong
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Psychiatry and clinical neurosciences     Volume:  66     ISSN:  1440-1819     ISO Abbreviation:  Psychiatry Clin. Neurosci.     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-02-22     Completed Date:  2012-07-05     Revised Date:  2014-04-08    
Medline Journal Info:
Nlm Unique ID:  9513551     Medline TA:  Psychiatry Clin Neurosci     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  87-96     Citation Subset:  IM    
Copyright Information:
© 2012 The Authors. Psychiatry and Clinical Neurosciences © 2012 Japanese Society of Psychiatry and Neurology.
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MeSH Terms
Brain / physiopathology*
Functional Laterality / physiology*
Middle Aged
Nerve Net / physiopathology*
Stress Disorders, Post-Traumatic / physiopathology*

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