A dry electrode EEG acquisition device

Abstract

The invention discloses a dry electrode electroencephalogram collecting device. The dry electrode electroencephalogram collecting device comprises an ear loop, an inflating assembly, a machine body box, an electrode, and a signal treating circuit. Through the adoption of the technical scheme of the dry electrode electroencephalogram collecting device disclosed by the invention, the size of an airsac can be changed in the manner that the air sac is inflated and deflated, so that the electrode is in sufficient contact with the skin in the ear, and the situation that high-quality electroencephalogram signals can be collected is guaranteed.

Description

technical field [0001] The invention belongs to the field of EEG signal acquisition, in particular to a dry electrode EEG acquisition device. Background technique [0002] The brain is an important part of the human central nervous system and the material basis of all thinking activities. It integrates, records, and responds to stimuli from information collected by human sensory organs. Brain neural activity is the performance of human thinking, cognition and other activities. There are many methods for detecting brain nerve activity, among which electroencephalography (EEG) method refers to using the discharge phenomenon during neural activity to directly record the electric field strength of the brain with electrodes. Since the scalp EEG method uses non-invasive electrodes to directly measure the electrical signals of the scalp, it has the advantages of low cost and high temporal resolution, so this method is widely used. At present, EEG has been used in the automatic d...

AI Technical Summary

Problems solved by technology

Existing in-ear EEG acquisition equipment uses flexible conductive materials, such as conductive sponge, soft silicone wire or conductive fabric. The preparation process of this material is complicated, the cost is high, and it is difficult to popularize.

Domestic scholars have proposed a single-lead ear EEG signal acquisition device, but because human ear muscles are very sensitive, if the electrode size is too large, it will cause strong discomfort to the user, and even scratch the skin inside the ear, which is not conducive to Normal use

However, if the size is too small, the electrodes will not be in close contact with the skin in the ear, making it difficult for the system to collect the EEG signals in the ear, which greatly hinders the application and promotion of EEG equipment.

Images