Document Detail

Resting-state EEG study of comatose patients: a connectivity and frequency analysis to find differences between vegetative and minimally conscious states.
MedLine Citation:
PMID:  22687166     Owner:  NLM     Status:  MEDLINE    
The aim of this study was to look for differences in the power spectra and in EEG connectivity measures between patients in the vegetative state (VS/UWS) and patients in the minimally conscious state (MCS). The EEG of 31 patients was recorded and analyzed. Power spectra were obtained using modern multitaper methods. Three connectivity measures (coherence, the imaginary part of coherency and the phase lag index) were computed. Of the 31 patients, 21 were diagnosed as MCS and 10 as VS/UWS using the Coma Recovery Scale-Revised (CRS-R). EEG power spectra revealed differences between the two conditions. The VS/UWS patients showed increased delta power but decreased alpha power compared with the MCS patients. Connectivity measures were correlated with the CRS-R diagnosis; patients in the VS/UWS had significantly lower connectivity than MCS patients in the theta and alpha bands. Standard EEG recorded in clinical conditions could be used as a tool to help the clinician in the diagnosis of disorders of consciousness.
Rémy Lehembre; Bruno Marie-Aurélie; Audrey Vanhaudenhuyse; Camille Chatelle; Victor Cologan; Yves Leclercq; Andrea Soddu; Benoit Macq; Steven Laureys; Quentin Noirhomme
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Functional neurology     Volume:  27     ISSN:  0393-5264     ISO Abbreviation:  Funct. Neurol.     Publication Date:    2012 Jan-Mar
Date Detail:
Created Date:  2012-06-12     Completed Date:  2012-08-30     Revised Date:  2013-12-05    
Medline Journal Info:
Nlm Unique ID:  8707746     Medline TA:  Funct Neurol     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  41-7     Citation Subset:  IM    
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MeSH Terms
Alpha Rhythm / physiology
Cerebral Cortex / physiopathology
Coma / diagnosis*,  physiopathology*
Delta Rhythm / physiology
Diagnosis, Differential
Electroencephalography / methods*
Middle Aged
Models, Neurological
Persistent Vegetative State / diagnosis*,  physiopathology*
Rest / physiology
Theta Rhythm / physiology
Young Adult

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

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