Volume 3, Issue 3 (September, 2023) – 10 articles
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In this paper, we created soft, porous, and hair-compatible sponge electrodes based on conductive poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS)/melamine (PMA), and integrated them onto a headset through a customized flexible circuit for multichannel EEG during VR task performing. Our PMA sponge electrodes can deform to make contact with the scalp skin through hairs under the pressure naturally applied by the strap of the VR headset. As a result, our VR-EEG headset is capable of recording alpha rhythms during eye-closure at both hairless and hairy sites. Furthermore, we developed a VR task to evoke the contingent negative variation (CNV) potential and achieved a classification accuracy of 0.66±0.07. Our sponge-electrode-integrated VR headset is user-friendly and easy to set up, marking a step toward future reliable, comfortable, and reusable VR-EEG technology.