Sensitive and Accurate Measurement Environment for Continuous Biomedical Monitoring using Microelectrodes

This paper presents a new non-invasive biomedical monitoring of selected psychosomatic processes. The proposed method measures human skin conductivity using the interdigitated array (IDA) microelectrodes, which allow continual monitoring and analysis of complicated physiological, pathophysiological, and therapeutic processes. The main goal is monitoring of psycho-galvanic reflex of the human skin that might be very useful for stress identification in medical and psychological experiments. An integrated monitoring system, applicable also in portable measurement environment, was designed and developed. Comparison to a standard bridge-based measurement system was done in terms of accuracy, sensitivity and other main features. The measurement method itself as well as results achieved are discussed.