Velcro Hook Electroencephalogram Textrode for Brain Activity Monitoring

Abstract

In this work, new electroencephalogram (EEG) electrodes that can detect high-quality EEG signals without the need for conductive gels or skin treatments and shaving the hair have been fabricated from an electrically conductive velcro hook with 1.8 Ω/sq. The velcro hook is washable for up to 200 washing cycles. The velcro textrode collected a signal with a lower skin-to-electrode impedance (-14.3%) and a higher signal-to-noise ratio (+2.17%) than comb Ag/AgCl dry electrodes. It gives inter-trial coherence and event-related spectral perturbation graphs identical to comb Ag/AgCl dry electrodes. Thus, these textrodes are a viable alternative for monitoring brain activity.