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. 2017 Jan 1;7(1):2. doi: 10.3390/bios7010002

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© 2017 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

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Left shows similarity plots of the capacitive electrode data, Bootstrapped electrode (top); and current-to-voltage converter (bottom). Right shows raw 1 s excerpts of the bio-potential recordings (blue Ag/Cl, green capacitive electrode).