Brain Dynamics in Response to Intermittent Photic Stimulation in Epilepsy

Purpose: Routine electroencephalogram (EEG) examinations uses intermittent photic stimulation (IPS) for investigation of the visual cortex EEG responses during resting time. This study aimed to discover brain dynamics effects IPS in 28 generalized epilepsy patients and healthy subjects. Methodology: Signal processing techniques were used feature extraction by Fast Fourier transform (FFT), dimension reduction t-test (significant, p<0.05) classification nearest neighbor (k-NN) support vector machine (SVM). Results: The group had higher level amplitude Theta waves compared group. Alpha time all frequencies observed with lower subjects k-NN (85.7% accuracy) classifier best discrimination from versus at 18 Hz IPS. However, using SVM (75.0% accuracy), 25 yielded between where responded similarly frequencies. Conclusions: shows that are suitable SVM, respectively, discriminate non-photosensitive normal interictal.