Question

Surface electrodes damage the living tissues.

(a) True

(b) False

The question was posed to me during a job interview.

The doubt is from Recording Electrodes topic in section Bioelectric Signal and Electrodes of Biomedical Instrumentation

Answer 1

The correct option is (b) False

The explanation: The surface electrodes pick up the potential difference from the tissue surface when placed over it without damaging the living tissues. They are placed above the skin and cause no harm to the living tissues. They capture the electrical activities of bunch of tissues together.