Difference between Electrode impedance and Skin-Electrode impedance?

edited August 2023 in General Discussion

I am learning about electrode impedance and have a couple of questions.

There are two terms used frequently, Electrode impedance and Skin-Electrode impedance. Do these refer to different kinds of impedance or are the terms used interchangeably?

There is an outdated recommendation that there should be less than 5 KOhms impedance. The Ten 20 paste apparently has an impedance of 40 KOhms, and other pastes would probably have a similar impedance, so how was it possible to get a Skin-Electrode impedance of less than 5 KOhms?


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