مقايسه الكتروانسفالوگرام كمي )qEEG( در بيماران PTSD و آزمودني‌هاي بهنجار

Quantitative Electroncephalographic (qEEG) Comparison of PTSD with Healthy Subjects

Posttraumatic stress disorder (PTSD) is a common disorder. Various investigations prove the biological basis for PTSD. There are only a few quantitative Electroencephalographic (qEEG) studies of PTSD patients. The aim of this study was to find out organic basis for PTSD by qEEG. The mental method of study was retrospective. The experimental group was comprised of 15 veterans with PTSD and 15 healthy subjects. The artifact free EEG epoch was analyzed by fast fourier transformation (FFT). Power values of particular frequency bands (delta, theta, alpha, beta) were observed on the frontal, central and occipital regions. PTSD patients had decreased alpha activity over frontal and central regions. No significant differences were noted between two groups in theta, beta and delta activity. These results suggest a cortical hyper excitability and prolonged wakefulness of PTSD patients and may help explain dysfunctional regions in this patients.