Microcontrolled system for measuring skin/electrode impedance inbioelectrical recordings

摘要

This work presents equipment able to measure impedance ofskin-electrode interface during the recording of biopotentials. Thisequipment is connected to a system previously developed in ourlaboratory for signal acquisition (SAASBIO-III). The aim is to assessthe impedance and warn the operator if the measured values are notsuitable. The electrode may be replaced to improve themeasurements