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Irreversibility Analysis Method of Epilepsy EEG Amplitude Based on Equivalent Arrangement 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 epilepsy EEG amplitude irreversibility and so on

Active Publication Date: 2020-06-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Description
  • Claims
  • Application Information

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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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  • Irreversibility Analysis Method of Epilepsy EEG Amplitude Based on Equivalent Arrangement and Standard Deviation
  • Irreversibility Analysis Method of Epilepsy EEG Amplitude Based on Equivalent Arrangement and Standard Deviation
  • Irreversibility Analysis Method of Epilepsy EEG Amplitude Based on Equivalent Arrangement 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] Such as figure 1 As shown, a method for analyzing the irrevers...

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Abstract

The invention discloses a method for analyzing the irreversibility of epileptic EEG amplitude based on equivalent arrangement and standard deviation. The method includes negative value processing of EEG signals, construction of a multidimensional delay vector, and symbolization of the multidimensional delay vector by equivalent arrangement. Classify the amplitude fluctuations of multi-dimensional vectors, use the amplitude fluctuations of multi-dimensional vectors to correct the type of equivalent arrangement, count and calculate the probability distribution of the corrected equivalent arrangement, and calculate the difference of the probability distribution of the arrangement types. The invention effectively extracts the nonlinear characteristics of the model sequence, and effectively characterizes the abnormally high amplitude irreversible characteristics of the epileptic seizure period and the unbalanced characteristic of higher than healthy brain electrical activity during the seizure period.

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 Patents(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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