3D Printable Dry EEG Electrodes with Coiled-Spring Prongs

Sensors

卷:20

Nozomu Araki¹  Shintaro Nakatani²  Masaya Kimura²  Shin-Ichiro Nishida²  Daiju Taketoshi³ 

[1] Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2201, Japan;

[2] Graduate School of Sustainability Science, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8552, Japan;

[3] Technical Department, Tottori University, 4-101, Koyama-cho Minami, Tottori 680-8552, Japan;

关键词: electroencephalography (EEG);    dry electrode;    3D printing;    coiled spring;    stereolithography (SLA);   

DOI  :  10.3390/s20174733

来源: DOAJ

【 摘 要 】

Various dry electroencephalography (EEG) electrodes have been developed. Dry EEG electrodes need to be pressed onto the scalp; therefore, there is a tradeoff between keeping the contact impedance low and maintaining comfort. We propose an approach to solve this tradeoff through the printing of complex-shaped electrodes by using a stereolithography 3D printer. To show the feasibility of our approach, we fabricated electrodes that have flexible fingers (prongs) with springs. Although dry electrodes with flexible prongs have been proposed, a suitable spring constant has not been obtained. In this study, the spring constant of our electrodes was determined from a contact model between the electrodes and the scalp. The mechanical properties and reproductivity of the electrodes were found to be sufficient. Finally, we measured the alpha waves when a participant opened/closed his eyes by using our electrodes.

【 授权许可】

Unknown