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Dual-channel self-balancing electrodermal impedance reactometer for autonomic response studies

  • Physiological Measurement
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Abstract

A self-balancing two-channel electrodermal impedance reactometer is described. It uses a phase-sensitive detector and incorporates feedback loops to achieve rapid automatic balancing of both resistive and capacitive components of skin impedance. The calibrated output which is produced is proportional to the skin electrical resistance and relative capacitance variation values and latency of the electrodermal response. The results of preliminary investigations on diabetics and nondiabetics are presented illustrating its application for the measurement of the electrodermal response to an external acoustic stimulus as a variation of the skin electrical resistance ΔR/R and latency in the appearance of the response. The results obtained show the electrodermal impedance reactometer to be highly technical, non-invasive, easy to handle and sensitive for evaluating autonomic dysfunction in diabetic neuropathy.

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Authors and Affiliations

  1. Electrophysiology Laboratory, Clinic of Diabetes Nutrition & Metabolic Diseases, Ion Movila 5-7, 70266, Bucharest, Romania

    S. Prună & C. Ionescu-Tîrgovişte

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  1. S. Prună
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  2. C. Ionescu-Tîrgovişte
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Prună, S., Ionescu-Tîrgovişte, C. Dual-channel self-balancing electrodermal impedance reactometer for autonomic response studies. Med. Biol. Eng. Comput. 25, 613–619 (1987). https://doi.org/10.1007/BF02447327

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  • DOI: https://doi.org/10.1007/BF02447327

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