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

An analysis method and standard deviation technology, applied in the field of statistical physics nonlinear feature analysis and neural information analysis, can solve the problem of irreversible EEG amplitude in epilepsy

Active Publication Date: 2019-11-22
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0004] The main purpose of the present invention is to solve the problem of measuring the imbalance of epileptic EEG from the perspective of amplitude fluctuations, and to provide a method for analyzing the irreversibility of epileptic EEG amplitude based on equivalent arrangement and standard deviation

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

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Embodiment Construction

[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0036] The present invention proposes a nonlinear characteristic index of amplitude irreversibility (AiR, amplitude irreversibility). Amplitude reversibility is defined as follows:

[0037] Suppose time series Y=X(t), for any n and t, if {X(t 1 ), X(t 2 ),…,X(t n )} and {-X(t 1 ),-X(t 2 ),…,-X(t n )} have the same joint probability distribution, then the sequence X(t) is magnitude invertible, otherwise the sequence X(t) is magnitude irreversible.

[0038] The main solution of the embodiment of the present invention is:

[0039] like figure 1 As shown, a method for analyzing the irreversibi...

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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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0476A61B5/00G16H50/20G06K9/00
CPCA61B5/7235A61B5/4094A61B5/7264G16H50/20A61B5/316A61B5/369G06F2218/10G06F2218/12
Inventor 姚文坡郭大庆王俊尧德中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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