Lateral cortical oscillations before and during photostimulation of a patient from four years after severe traumatic brain injury compared with those of a control group
Keywords:
EEG, EEG habituation, absolute power, EEG rhythms, traumatic brain injury, neuroplasticityAbstract
Introduction: Human behavior depends on electrical brain oscillations. Absolute power (AP),
sensory-motor responses and the capability to habituate, decrease in patients who have acquired
brain damage. Methods: Five serial QEEG (Quantitative Electroencepalogram) through a 7.5
month-span were performed in a patient who had a gunshot 4 years before, at the left orbit,
trespassing frontal, parietal and temporal lobes. Sequential QEEG were recorded under closing
eyes with 20 series of photo-stimulation (FR). Recordings were done on AP average (APA) for every
pre-stimulation (Pre) and for every RPh period in four wide-band frequencies. AP distribution was
evaluated by linear regression and its statistical significance is discussed. Results were matched
to a 10 young adults control group (CG) aged in average 22.4 years (± SD 4.1 years). Results:
APAs on delta and theta were bigger in patient’s left hemisphere (LH) than in right hemisphere
(RH) and than in CG. Alpha APAs were higher in patient’s RH than in LH, but lower than in CG.
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