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A Novel Dry Active Biosignal Electrode Based on an Hybrid Organic-Inorganic Interface Material

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4 Author(s)
Ribeiro, D.M.D. ; Inst. of Electron. & Telematics Eng. of Aveiro, Aveiro, Portugal ; Fu, L.S. ; Carlos, L.A.D. ; Cunha, J.P.S.

In this paper, we describe the design, implementation and testing of a dry active flexible electrode with a novel interface material for wearable biosignal recording. The new interface material takes the form of a gel and is highly bendable and comfortable on the wearer's skin. A comparison between common Ag/AgCl and our dry active electrode was performed on seven healthy volunteers. The presented prototype was designed for ECG signals but this technology can be modified for other biosignals. Our results show that the new dry active electrode presents better electrical characteristics than the common Ag/AgCl electrode, namely less power-line interference and better response in the signal band. We can conclude that our novel dry active flexible electrode outperforms the traditional Ag/AgCl wet electrode with the advantages of being dry and comfortable. Some future applications of this bio device are discussed.

Published in:

Sensors Journal, IEEE  (Volume:11 ,  Issue: 10 )