Design of a multi-channel electroencephalogram acquisition system for transcranial direct current stimulation regulation

In response to the inherent characteristics of electroencephalogram (EEG) signals and the requirements of EEG acquisition systems, this paper investigates a portable multichannel EEG signal acquisition device. The acquisition system is capable of recording high-quality EEG signals from 16 channels, achieving the functions of EEG signal acquisition, analog-todigital conversion, and data transmission. By collecting EEG signals before and after transcranial direct current stimulation (tDCS) therapy, and adjusting the parameters of electrical stimulation based on the EEG signal status, the accuracy of tDCS therapy can be improved and personalized treatment can be realized.