The Quik-Cap gel-based electrode arrays feature low-profile electrodes embedded in soft silicone rubber reservoirs for added wearer comfort and to facilitate the retention of electrode gel at the site of application. The flatter and smaller diameter electrodes, allow for sufficient separation for high-density recordings up to 256 channels, while minimizing the potential for salt bridges between electrodes, and at all times ensure that electrode impedances can be obtained below the EEG discipline standard of 5 kOhms.