抄録
In this paper, we propose a candle-like micro-needle electrode for electroencephalogram (EEG) measurement from the hairy part of the scalp. Conventional wet electrodes for EEG measurement require skin abrasion and electrically conductive gel. This is time-consuming and uncomfortable. On the other hand, micro-needle electrodes can eliminate this process by penetrating through the high impedance stratum corneum. So far, our group has developed a polymer-based dry micro-needle electrode and measured EEG from the frontal pole. However, it was impossible to measure EEG from the hairy part of the scalp by using this electrode because hair obstructs contact between microneedles and the scalp. Therefore, we fabricated candle-like micro-needle electrodes that has pillars for avoiding hair and measured EEG from the occipital, where there is hair. The acquired signal showed as high quality as the conventional wet electrode.
