A novel method for noninvasive bioelectric measurement utilizing conductivity of seawater

Abstract A novel method of noninvasive bioelectric measurement that utilizes the conductivity of seawater covering a person’s whole body is proposed. Concretely, a conductor used as a common electrode is sunk into the seawater, and four special bioelectrodes isolated from the seawater are attached a...

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Autores principales:	Tsunemasa Saiki, Yukako Takizawa, Koji Murai, Ryuhei Okuno, Masakazu Arima
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8f32aa6232cc4cb39130f0a20a50c41b
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spelling	oai:doaj.org-article:8f32aa6232cc4cb39130f0a20a50c41b2021-12-02T14:25:09ZA novel method for noninvasive bioelectric measurement utilizing conductivity of seawater10.1038/s41598-021-86295-y2045-2322https://doaj.org/article/8f32aa6232cc4cb39130f0a20a50c41b2021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86295-yhttps://doaj.org/toc/2045-2322Abstract A novel method of noninvasive bioelectric measurement that utilizes the conductivity of seawater covering a person’s whole body is proposed. Concretely, a conductor used as a common electrode is sunk into the seawater, and four special bioelectrodes isolated from the seawater are attached at measurement points on the body. Bioelectric signals generated between the common electrode and special bioelectrodes are then measured. To verify the effectiveness of the proposed method, bioelectric signals of six participants immersed in a bathtub filled with seawater were experimentally measured. The measurement results revealed that the proposed method enables multipoint bioelectric measurement using about half the number of bioelectrodes used by the conventional method on land, and a plurality of bioelectric phenomena can be observed at one measurement point. It was also revealed that compared with the conventional method, the proposed method significantly reduces external electrical noise included in the bioelectric signals by exploiting the shielding effect of seawater. If simple bioelectric measurements in seawater were possible in the manner described above, not only people such as scuba divers but also precious animals living in the sea could be noninvasively treated as measurement subjects.Tsunemasa SaikiYukako TakizawaKoji MuraiRyuhei OkunoMasakazu ArimaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Tsunemasa Saiki Yukako Takizawa Koji Murai Ryuhei Okuno Masakazu Arima A novel method for noninvasive bioelectric measurement utilizing conductivity of seawater
description	Abstract A novel method of noninvasive bioelectric measurement that utilizes the conductivity of seawater covering a person’s whole body is proposed. Concretely, a conductor used as a common electrode is sunk into the seawater, and four special bioelectrodes isolated from the seawater are attached at measurement points on the body. Bioelectric signals generated between the common electrode and special bioelectrodes are then measured. To verify the effectiveness of the proposed method, bioelectric signals of six participants immersed in a bathtub filled with seawater were experimentally measured. The measurement results revealed that the proposed method enables multipoint bioelectric measurement using about half the number of bioelectrodes used by the conventional method on land, and a plurality of bioelectric phenomena can be observed at one measurement point. It was also revealed that compared with the conventional method, the proposed method significantly reduces external electrical noise included in the bioelectric signals by exploiting the shielding effect of seawater. If simple bioelectric measurements in seawater were possible in the manner described above, not only people such as scuba divers but also precious animals living in the sea could be noninvasively treated as measurement subjects.
format	article
author	Tsunemasa Saiki Yukako Takizawa Koji Murai Ryuhei Okuno Masakazu Arima
author_facet	Tsunemasa Saiki Yukako Takizawa Koji Murai Ryuhei Okuno Masakazu Arima
author_sort	Tsunemasa Saiki
title	A novel method for noninvasive bioelectric measurement utilizing conductivity of seawater
title_short	A novel method for noninvasive bioelectric measurement utilizing conductivity of seawater
title_full	A novel method for noninvasive bioelectric measurement utilizing conductivity of seawater
title_fullStr	A novel method for noninvasive bioelectric measurement utilizing conductivity of seawater
title_full_unstemmed	A novel method for noninvasive bioelectric measurement utilizing conductivity of seawater
title_sort	novel method for noninvasive bioelectric measurement utilizing conductivity of seawater
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8f32aa6232cc4cb39130f0a20a50c41b
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A novel method for noninvasive bioelectric measurement utilizing conductivity of seawater

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