Silver/silver chloride electrodes have superior performance characteristics for biopotential measurements. Correct application and cleaning is essential in achieving quality performance and long life. Silver/silver chloride is recognized worldwide as a stable, low noise reference electrode. It is reversible, which means it can pass an electric current without changing the chemical environment in the immediate vicinity of the electrode. This is not true of metal electrodes. EEG Info electrodes have a plastic casing which simplifies attachment and cleanup. Additionally, these sensors are less prone to motion artifact than metal electrodes.