| Microphonics in biopotential measurements with capacitive electrodes. | |
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MedLine Citation:
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PMID: 21097027 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Biopotential measurements with capacitive electrodes do not need any direct contact between electrode and skin, which saves the time devoted to expose and prepare the contact area when measuring with conductive electrodes. However, mechanical vibrations resulting from physiological functions such as respiration and cardiac contraction can change the capacitance of the electrode and affect the recordings. This transformation of mechanical vibrations into undesired electric signals is termed microphonics. We have evaluated microphonics in capacitive ECG recordings obtained from a dressed subject seated on a common chair with electrodes placed on the front side of the backrest of the chair. Depending on the softness of the backrest, the recordings may be clearly affected by the displacement of the thorax back wall due to the respiration and to the heart's mechanical activity. |
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Authors:
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Pablo S Luna-Lozano; Ramon Pallas-Areny |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference Volume: 1 ISSN: 1557-170X ISO Abbreviation: Conf Proc IEEE Eng Med Biol Soc Publication Date: 2010 |
Date Detail:
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Created Date: 2010-11-24 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101243413 Medline TA: Conf Proc IEEE Eng Med Biol Soc Country: United States |
Other Details:
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Languages: eng Pagination: 3487-90 Citation Subset: IM |
Affiliation:
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Instrumentation, Sensors and Interfaces Group, Castelldefels School of Technology, Universitat Politècnica de Catalunya (UPC), (Barcelona), 08860, Spain. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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