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Electroencephalogram characteristics in patients with chronic fatigue syndrome

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By Tong Wu et al.
 
Abstract
 
Objective: To explore the electroencephalogram (EEG) characteristics in patients with chronic fatigue syndrome (CFS) using brain electrical activity mapping (BEAM) and EEG nonlinear dynamical analysis.
 
Methods: Forty-seven outpatients were selected over a 3-month period and divided into an observation group (24 outpatients) and a control group (23 outpatients) by using the non-probability sampling method. All the patients were given a routine EEG. The BEAM and the correlation dimension changes were analyzed to characterize the EEG features.
 
Results: 1) BEAM results indicated that the energy values of delta, theta, and alpha1 waves significantly increased in the observation group, compared with the control group (P<0.05, P<0.01, respectively), which suggests that the brain electrical activities in CFS patients were significantly reduced and stayed in an inhibitory state; 2) the increase of delta, theta, and alpha1 energy values in the right frontal and left occipital regions was more significant than other encephalic regions in CFS patients, indicating the region-specific encephalic distribution; 3) the correlation dimension in the observation group was significantly lower than the control group, suggesting decreased EEG complexity in CFS patients.
 
Conclusion: The spontaneous brain electrical activities in CFS patients were significantly reduced. The abnormal changes in the cerebral functions were localized at the right frontal and left occipital regions in CFS patients.
 
Source:  Tong Wu, Xianghua Qi, Yuan Su, Jing Teng, Xiangqing Xu. Electroencephalogram characteristics in patients with chronic fatigue syndrome.  Dove Press. Neuropsychiatric Disease and Treatment. 2016 Volume 2016:12 Pages 241—249
 

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