A comparative evaluation between conditions of the wrist band capacitively-coupled ECG recording through signal-to-noise ratio.

The purpose of this study is to evaluate the performance to measure ECG recording based on signal-to-noise ratio of ECG signals recorded with three types of electrodes in four experimental conditions for discussion on appropriate form of the electrodes. The wrist band shaped capacitively-coupled electrodes have been developed. We evaluated the signal-to-noise ratios with statistical methods when the reference and the properties of the electrodes were substituted. From our results, it is indicated that not only performance of the electrodes themselves but also stabilization of electrodes around skin are important for steady ECG recording.