Epileptic electroencephalography amplitude irreversibility analysis method based on equivalent array and standard deviation

Abstract

The invention discloses an epileptic electroencephalography amplitude irreversibility analysis method based on equivalent array and standard deviation. The method comprises the steps that an electroencephalogram signal is subjected to negative value processing, a multi-dimension delay vector is established and subjected to equivalent array signifying, amplitude fluctuation of the multi-dimension vector is classified, an amplitude fluctuation mark of the multi-dimension vector is used for correcting an equivalent array type, probability distribution for correcting equivalent array is counted and calculated, and the difference of probability distribution of the array type is calculated. According to the method, the non-linear characteristic of a model sequence is effectively extracted, and the abnormally-high amplitude irreversibility characteristic in the attack stage of epilepsy and the non-balance characteristic higher than healthy brain electrical activity in the attack stage are effectively represented.

Description

technical field [0001] The invention belongs to the fields of statistical physics nonlinear feature analysis and neural information analysis, and in particular relates to an irreversible analysis method for epilepsy EEG amplitude based on equivalent arrangement and standard deviation. Background technique [0002] Epilepsy is a neurological disorder in which seizures are transient symptoms caused by excessive abnormal or synchronized neuronal activity. The human brain is a typical complex system composed of a large number of neurons and glial cells, which interacts with other physiological systems to achieve complex physiological functions, and is affected by various internal and external factors. Extract complex dynamic features such as nonlinearity and imbalance of EEG signals in patients with epilepsy. Non-equilibrium refers to the property that the system deviates from the steady state, and is often described as time irreversible, that is, to measure the reversibility o...

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