Interference reduction techniques in neural recording tripoles: An overview

Since the introduction of the quasi-tripole amplifier configuration in the mid-70s for the purpose of long-term recording of neural signals from peripheral nerves, research efforts are now being focused in using peripheral nerve signals as control inputs to neural prostheses. This paper gives an overview of the most important neural recording tripolar configurations, and explores the idea of modeling the polarization impedance of electrodes using branched ladder networks to achieve adaptive passive neutralization of myoeletric interference.