Method and system for removing oculograph artifacts in sleep state analysis

A technology of oculoelectric artifacts and sleep state, applied in the field of sleep aids, can solve problems affecting the analysis effect of EEG signals, etc., to reduce the impact and ensure the effect of analysis

Active Publication Date: 2019-05-07
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The waveform of the EEG signal processed by the traditional method often changes, which affects the subsequent analysis of the EEG signal.

Method used

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  • Method and system for removing oculograph artifacts in sleep state analysis
  • Method and system for removing oculograph artifacts in sleep state analysis
  • Method and system for removing oculograph artifacts in sleep state analysis

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Embodiment Construction

[0025] Embodiments of the method and system for removing electrooculogram artifacts in sleep state analysis of the present invention will be described below with reference to the accompanying drawings.

[0026] refer to figure 1 as shown, figure 1 It is a flow chart of the method for removing electrooculogram artifacts in the sleep state analysis of the present invention, including:

[0027] S101, collecting the user's electro-ocular signals and original EEG signals according to the set frame length;

[0028] In this step, the frame length can be set in the sleep state analysis of the user such as assisted sleep, and the eye electricity generated by the user during sleep can be collected by the user wearing the relevant electro-oculogram sensing device and EEG sensing device. signals and EEG signals. When collecting signals, 30s can be used as a frame for collection, and subsequent analysis and processing of each frame of electro-ocular signals and electroencephalogram sign...

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Abstract

The invention relates to a method and system for removing ocular artifacts in sleeping state analysis. The method comprises: collecting an ocular signal and an original electroencephalogram signal of a user according to a pre-set frame length; carrying out empirical mode decomposition on the original electroencephalogram signal of a frame and decomposing the signal into a plurality of eigenmode functions, so as to obtain an eigenmode function set; calculating a correlation coefficient between each eigenmode function in the eigenmode function set and an ocular signal of the same moment respectively; finding out the eigenmode function with the coefficient coefficient which is greater than a pre-set threshold value, and the eigenmode function with the maximum correlation coefficient, and deleting the eigenmode functions from the eigenmode function set; and reconstructing the electroencephalogram signal of the frame by utilizing residual eigenmode functions in the eigenmode function set. According to the scheme provided by the invention, influences on the waveform of the electroencephalogram signal, caused by an ocular artifact removing process, can be reduced; and almost detailed information of the original signal is kept and a subsequent analysis result of the electroencephalogram signal is ensured.

Description

technical field [0001] The invention relates to the technical field of sleep aids, in particular to a method and system for removing electrooculogram artifacts in sleep state analysis. Background technique [0002] During sleep, the human body undergoes a process of self-relaxation and recovery, so good sleep is a basic condition for maintaining good health; however, due to work pressure, irregular life schedule and other reasons, some people have poor sleep quality , manifested as insomnia, waking up in the middle of the night, etc. [0003] There are already some devices on the market to help people fall asleep and improve the quality of sleep. For example, in a specific sleep state, manual intervention such as sound and light signals can be used to avoid waking up the user in a deep sleep state. For devices that assist sleep, in order to really achieve the purpose of improving the user's sleep quality, it is very important to correctly identify the user's sleep state. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00
CPCA61B5/4806A61B5/7203A61B5/7264
Inventor 赵巍胡静韩志
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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