A Review of Bioelectrodes for Clinical Electrophysiologists

The theory of bioelectrodes describes the rules governing the passage of electrical charge between electrodes and electrolytes. In this review, we explain the basis of bioelectrodes with focus on clinical electrophysiology. The central concept is the double-layer capacitance that forms in the interface between electrodes and tissue. This phenomenon controls charge transfer between electrodes and tissues and contributes to detrimental effects such as electrode polarization and motion artifacts. Many methods critical to the practice of electrophysiology, including fractally-coated pacemaker leads, biphasic stimuli, signal filtering, and the use of non-polarizable electrodes, are devised to mitigate these problems.

Source: Heart Rhythm - September 24, 2018 Category: Cardiology Authors: Shahriar Iravanian, Jonathan J. Langberg Source Type: research