Electroencephalogram acquisition wet electrode

Abstract

The invention relates to an electroencephalogram acquisition wet electrode. The electroencephalogram acquisition wet electrode comprises a shell, a base, a spherical substrate and an electrode column,the shell is fixed to the upper end of the base, and the spherical substrate is installed on the junction of the shell and the base and can universally move on the junction; the electrode column is installed at the lower end of the spherical substrate and can move vertically relative to the spherical substrate. The structural form of the combination of axial retracting and drawing of the electrode column and slant center adjustment of the spherical substrate is adopted, the flexibility of the electrode is improved, and the degree of fitting of curvature of the electrode and a scalp contact isimproved; meanwhile, the electrode has the function that insulation is stopped after a conducting medium is injected, it is avoided that the conducting medium is communicated with the parts among multi-channel electrodes, signal interference is avoided, the function can be utilized to simultaneously and automatically inject the conducting medium to the multi-channel electrodes through a conducting medium supply source, and effective monitoring and acquisition of an electroencephalogram for a long time are achieved.

Description

technical field [0001] The present application relates to the technical field of EEG collection, in particular to a wet electrode for EEG collection. Background technique [0002] Electrodes play a key role in the process of scalp EEG signal acquisition. As the interface between the human body and external measurement equipment, the performance of electrodes directly determines the quality of EEG signal acquisition. [0003] There are generally two types of EEG acquisition electrodes: dry electrodes and wet electrodes. Wet electrodes can achieve low-impedance contact between the electrodes and the scalp under well-prepared conditions, and the collected EEG data has a high signal-to-noise ratio. The electrode still has the following two problems: First, the experimental preparation process is time-consuming and cumbersome, and it takes a lot of time and energy to manually apply conductive paste or inject conductive liquid to each collection position one by one with the assist...

AI Technical Summary

Problems solved by technology

[0004] In view of the above analysis, this application aims to provide a wet electrode for EEG collection, which is used to solve the time-consuming and cumbersome use process of the existing wet electrode, the continuous use time is short, and it is difficult to realize the automatic injection of the conductive medium of the multi-channel electrode. The curvature fitting of the point of contact with the scalp is poor, and the problem of low comfort

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