Low-Noise, Interference-Resistant Amplifier Suitable for Biological Signals

2 December 1966

journal article
research article
Published by American Association for the Advancement of Science (AAAS) in Science

Vol. 154 (3753) , 1191-1192
https://doi.org/10.1126/science.154.3753.1191

Abstract

Minor changes in conventional low-noise amplifier circuits decrease circuit noise and attenuate the unwanted effects of varying impedances and potentials which exist between commonly employed electrodes and the tissues of biological subjects. The resulting reduction of intrinsic amplifier noise and reduced susceptibility to external interference is helpful in the study of low-frequency signals of microvolt level.