SuperVisc gel (EasyCap) is an electrode gel which allows electrode preparation without skin abrasion and in a short time to increase the particpants' comfort. Its high salt content (10%) ensures optimal conductivity: Due to the high salt concentration gradient between the body and the gel, the gel is litterally is sucked into the skin, thus establishing the best possible contact. The high viscosity further let the gel stay inside the electrode holders to easily avoid any bridgeing between neighbor electrodes.