Many electroencephalography (EEG) sensors, including conventional wet and dry sensors, use materials that can cause skin irritation and discomfort. To overcome this drawback, this study reports on the design and human testing of a SGS-certified, silicon-based dry-contact EEG sensor. In addition to being non-irritating, the acicular sensors are lightweight, flexible, and capable of easily fitting to the scalp, forehead, or hairy sites without any skin preparation or conductive gel. The sensors also maintain low skin-electrode interface impedance. Results of this study demonstrate that the proposed sensors perform well in EEG measurements and are feasible for both medical and entertainment applications.
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