Probability distribution function shows that the activity of an epileptic brain is nongaussian in nature. , for the epileptic patients during seizure. Using random shuffled surrogate analysis, we have obtained some of the nonlinear features that was obtained by Andrzejak et al. In this paper we have reinvestigated the EEGs for normal and epileptic patients using surrogate analysis, probability distribution function and Hurst exponent. Amongst the various disorder of the brain, epilepsy has drawn the most attention because this disorder can affect the quality of life of a person. Investigation of the functioning of the brain in living systems has been a major effort amongst scientists and medical practitioners.
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