Biopotential measurement electrode, biopotential measurement apparatus, and biopotential measurement method

摘要

Even if the electrode is not in direct contact with the skin, the bioelectric potential can be measured with high accuracy without being affected by motion artifacts. A first lead for detecting a bioelectric potential including a noise component, a second lead that is electrically separated from the first lead and detects a noise component, a first signal output from the first lead, and an output from the second lead And a differential amplifier circuit that amplifies and outputs the difference between the first signal and the second signal, and the noise component detected from the second lead is a frequency spectrum of the biopotential The input impedance value on the second signal side in the differential amplifier circuit is set so as to have a higher frequency.