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Electroencephalography Journals

Electroencephalography may provide useful information about consciousness and cognitive processing in patients who have traumatic brain injury. Sleep disturbance after traumatic brain injury may impair cognitive function and affect rehabilitation. Electroencephalography and neuropsychologic tests were performed. In 8 patients who had subacute and chronicdiffuse axonal injury and 7 healthy control subjects, electroencephalography, magnetoencephalography, and neuropsychologic tests were performed to evaluate sleep spindles and cognitive function. Electroencephalography (EEG) has been evaluated for the clinical assessment of consciousness to support the diagnosis and prognosis ]. Electrical activity of brain tissue may have good prognostic value after brain injury. When performed from 15 days to 4 years after injury, EEG may provide an objective and quantitative measure of the severity of brain injury. In the chronic stage of diffuse axonal injury, the mean peak frequency of alpha activity was significantly lower in patients who had abnormal than normal electroencephalography. The mean peak frequency of fast spindles, amplitude, and cortical activation source strength in precentral and postcentral regions were significantly slower in patients who had subacute diffuse axonal injury than healthy participants, and these parameters increased from the subacute to the chronic stage of diffuse axonal injury. After neurocognitive rehabilitation, cognitive functions were improved in all patients.

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