| Electrodermal activity by DC potential and AC conductance measured simultaneously at the same skin site. | |
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MedLine Citation:
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PMID: 20923453 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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BACKGROUND: For a long time, DC conductance has been the most important parameter in electrodermal routine measurements. However, DC current flow polarizes the electrodes, electrolyzes the skin, disturbs the measurement of conductance by possible varying electromotive forces (EMFs) in the circuit, and impedes the registration of the skin endosomatic DC potential. METHODS: We therefore present a measuring system where DC current was replaced by a small AC current in a monopolar system, enabling the DC potential and AC conductance to be measured simultaneously at the same skin site. RESULTS: We have also found examples of skin potential (SP) response waveforms with diphasic sharp edges not appearing in the conductance waveforms. The potential responses were found to be more robust with respect to movement artifacts, and the instrumentation could discern whether the indifferent electrode actually was on an inactive skin site. CONCLUSION: In order to study the generating mechanisms of EDA in detail, the SP must be measured without DC current flow and compared with AC conductance results. |
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Authors:
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Sverre Grimnes; Azar Jabbari; Ørjan G Martinsen; Christian Tronstad |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging (ISSI) Volume: 17 ISSN: 1600-0846 ISO Abbreviation: Skin Res Technol Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9504453 Medline TA: Skin Res Technol Country: Denmark |
Other Details:
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Languages: eng Pagination: 26-34 Citation Subset: IM |
Copyright Information:
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© 2010 John Wiley & Sons A/S. |
Affiliation:
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Department of Physics, University of Oslo, Oslo, Norway. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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