Equipment for eliminating ocular artifacts during sleeping state analysis

Abstract

The invention relates to equipment for eliminating ocular artifacts during sleeping state analysis. The equipment comprises an electroencephalogram electrode, an electrooculogram electrode, a reference electrode, an analog-to-digital converter and a processor, wherein the analog-to-digital converter is connected with the reference electrode; the processor is connected with a filtering circuit through the analog-to-digital converter; the electroencephalogram electrode is used for detecting an original electroencephalogram signal; the electrooculogram electrode is used for collecting an electrooculogram signal; the analog-to-digital converter is used for analog-to-digital conversion; the filtering circuit is used for inputting the signal to the processor after the low-frequency filtering; the processor is used for performing empirical mode decomposition on each frame of the original electrooculogram signal, and decomposing the original electrooculogram signal into a plurality of eigenmode functions; the relevant coefficient between each eigenmode function and the electrooculogram at the same moment is calculated; the eigenmode functions with the relevant coefficients being greater than the preset threshold value and the eigenmode function with the maximum relevant coefficient are found and deleted; the rest eigenmode functions are used for rebuilding each frame of electroencephalogram. The equipment provided by the invention has the advantages that the influence on the electroencephalogram waveform in the ocular artifacts eliminating process can be reduced; most detail information of the original signal is remained.

Description

technical field [0001] The invention relates to the technical field of sleep aids, in particular to a device for removing oculoelectric 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. [0004] Polys...

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.

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