Gel-free wearable electroencephalography (EEG) with soft graphene textiles

Official URL: https://dx.doi.org/10.1109/SENSORS47087.2021.9639711

Attaching rigid wearables to ones skin may be socially challenging to be accustomed since their wearers may feel vulnerable with compromising their privacy, especially if the device is for tracking neurological or medical conditions. The development of flexible, long-term wearable, conductive nanomaterials with high fidelity can enable continuous and socially discrete ambulatory electroencephalography (EEG) since the sensing materials are the garment fibers themselves (i.e., 3rd generation intelligent clothing), not a rigid device. Here we introduce graphene-based electronic iles (e-ile) sensors in series of proof of principle experiments to record brain waves, including alpha rhythms activity, merely from the forehead and achieved an impressive correlation of ~ 91% in benchmarking with commercial dry electrodes.