Research
Chinese researchers' gel electrode keeps a brain-signal cap working for 14 hours at rest
Researchers from Guangxi University, Guangxi Medical University and Tsinghua University have built a hydrogel EEG electrode that is soft against the scalp and firm where it meets the circuit. Fitted into a commercial EEG cap, it recorded stable brain signals for more than 14 hours at rest and more than 8 hours during free movement, with typing by brain signal above 94% accurate over the long recordings. The paper appeared in npj Flexible Electronics on 31 October 2026.