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A computer-controlled system for measuring an impedance locus of palmar skin

A computer-controlled system for measuring an impedance locus of palmar skin Frontiers Med. Biol. Engng , Vol. 11, No. 1, pp. 73– 83 (2001) Ó VSP 2001. Technical report A computer-controlled system for measuring an impedance locus of palmar skin HIROMI ISSHIKI 1 ; ¤ and YOSHITAKE YAMAMOTO 2 1 Takuma National College of Technology, Kohda 551, Takuma-cho, Mitoyo-gun, Kagawa 769-1192, Japan 2 Faculty of Health Sciences, Okayama University Medical School, Shikata-cho 2-5-1, Okayama 700-8558, Japan Received 7 December 1999; revised 4 September 2000; accepted 18 September 2000 Abstract —Compared to direct current (DC) methods, alternating current (AC) methods have rarely been used in the Ž eld of electrodermalresearch. AC methods, however, have the advantage of enabling analysis of electrodermal activity, including capacitive properties. To establish an easy AC method, a computer-controlled measurement system was developed in this study. The system can automatically measure impedances at three different frequencies on the basis of phase detection and determine an impedance locus. Performance tests using RC parallel circuits showed that the system has sufŽ cient accuracy. Palmar skin impedance was also measured and temporal changes in parameters of the circular arc law were investigated. It was demonstrated that the system can obtain impedance data with a data acquisition time of less http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Frontiers of Medical & Biological Engineering Brill

A computer-controlled system for measuring an impedance locus of palmar skin

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Publisher
Brill
Copyright
© 2001 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0921-3775
eISSN
1568-5578
DOI
10.1163/156855701750383204
Publisher site
See Article on Publisher Site

Abstract

Frontiers Med. Biol. Engng , Vol. 11, No. 1, pp. 73– 83 (2001) Ó VSP 2001. Technical report A computer-controlled system for measuring an impedance locus of palmar skin HIROMI ISSHIKI 1 ; ¤ and YOSHITAKE YAMAMOTO 2 1 Takuma National College of Technology, Kohda 551, Takuma-cho, Mitoyo-gun, Kagawa 769-1192, Japan 2 Faculty of Health Sciences, Okayama University Medical School, Shikata-cho 2-5-1, Okayama 700-8558, Japan Received 7 December 1999; revised 4 September 2000; accepted 18 September 2000 Abstract —Compared to direct current (DC) methods, alternating current (AC) methods have rarely been used in the Ž eld of electrodermalresearch. AC methods, however, have the advantage of enabling analysis of electrodermal activity, including capacitive properties. To establish an easy AC method, a computer-controlled measurement system was developed in this study. The system can automatically measure impedances at three different frequencies on the basis of phase detection and determine an impedance locus. Performance tests using RC parallel circuits showed that the system has sufŽ cient accuracy. Palmar skin impedance was also measured and temporal changes in parameters of the circular arc law were investigated. It was demonstrated that the system can obtain impedance data with a data acquisition time of less

Journal

Frontiers of Medical & Biological Engineering – Brill

Published: Jan 1, 2001

Keywords: PHASE DETECTOR; ELECTRODERMAL ACTIVITY; CIRCULAR ARC LAW; SKIN IMPEDANCE LOCUS; AC METHOD

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