What is the consequence of leaving electrode paste residue on the skin?

What is the consequence of leaving electrode paste residue on the skin?

• A. Enhanced artifact
• B. Discarded electrodes
• C. Improved detergent selection
• D. Improvement in adherence

Answer: (A)

Leaving electrode paste residue on the skin tends to increase artifacts in the recording. The paste is conductive and designed to improve contact at the electrode site, but when any residue remains on the skin, it can spread or dry into a conductive film that bridges between nearby electrode sites or changes impedance unpredictably as you move. This extra coupling between channels shows up as noise, baseline wander, and spurious signals—i.e., enhanced artifact. It isn’t about discarding the electrodes, changing detergents, or improving adhesion; it’s about how leftover paste can disrupt clean, stable electrical contacts and degrade signal quality. Clean skin between applications to maintain consistent impedance and minimize artifacts.

Leaving electrode paste residue on the skin tends to increase artifacts in the recording. The paste is conductive and designed to improve contact at the electrode site, but when any residue remains on the skin, it can spread or dry into a conductive film that bridges between nearby electrode sites or changes impedance unpredictably as you move. This extra coupling between channels shows up as noise, baseline wander, and spurious signals—i.e., enhanced artifact. It isn’t about discarding the electrodes, changing detergents, or improving adhesion; it’s about how leftover paste can disrupt clean, stable electrical contacts and degrade signal quality. Clean skin between applications to maintain consistent impedance and minimize artifacts.