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Electrode paste ______________(a) increases contact impedance(b) equates contact impedance(c) reduces contact impedance(d) absorbs contact impedanceI got this question during an interview.Origin of the question is Potentiometric Recorder topic in section Recording System of Biomedical Instrumentation

Answer» CORRECT option is (c) reduces contact impedance

Explanation: In order to obtain a clearly established contact (low contact impedance) an electrolyte or ELECTRODE paste is USUALLY employed as an interface between the electrode and the surface of the source of the event. It is placed between the skin and the electrode. It helps to GET better SIGNAL acquisition.


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