Hurst Exponent Analysis Of Schizophrenia Electroencephalogram Based On Multi-point Fractional Brownian Bridge

In this paper, the Hurst index calculation method based on multipoint fractional Brown bridge was used to analyze the electroencephalogram(EEG) of schizophrenia patients and healthy people under the same sound paradigm experiment. We used this method to analyze the short-term EEG signals of the healthy group and the patient group around the time point 100ms after stimulation and found that the method can effectively analyze the Hurst index of short-time series, in the frontal lobe and central area. There were significant differences in passage, and the Hurst index was lower in healthy people than in patients. The results show that in this experiment, the long-term correlation of EEG signals after stimulation in patients with schizophrenia is higher, and the complexity of EEG signals is lower, which can help clinical diagnosis of schizophrenia better. At the same time, this paper compares the Hurst exponent calculation method based on the multi-point fractional Brown bridge with the traditional rescaled range analysis method. The Hurst index calculation of the sequence can analyze the difference between the healthy group and the patient group on a smaller scale.