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Investigation of Obsessive Compulsive Disorder with FFT Dipol Approximation by means of EEG

EEG analysis has been used in pathophysiological research of Obsessive Compulsive Disorder (OCD) that is one of the neuropsychiatric disease. EEG abnormalities was observed in brain cortex of patients with OCD. Fast Fourier Transform (FFT) Dipol Approximation Method (FFTDA), used for source localization and superior to conventional FFT method, has also been used for measurement of the level of EEG synchronization. In this research, phase differences between cortical neural oscillations was computed by using FFTDA Then, analysis of 19 channel EEG series, collected with international 10-20 electrode placement system, shows the loss of Theta band phase synchronization in patients with OCD..