Dry Electrode Materials for Electrocardiographic Monitoring

In this paper, a preliminary study about the most suitable dry electrode materials is done in the context of electrocardiogram (ECG) measurement systems used at home. Therefore, the electrical equivalent circuit between two electrodes through the body is developed as well as the ECG quality evaluation factors. Finally, an initial series of impedance and ECG quality measurements is presented which led to the conclusion that dry stainless steel electrodes seem to provide the best ECG signal quality.