g.GAMMAcap was designed to increase the speed of EEG experimental setups. The ladybird and butterfly electrodes designed by g.tec can be inserted into individual positions and stay inserted for a whole experimental study. Cleaning of the cap is performed with the electrodes in the cap to save time. The user can also add individual electrode positions. The electrode labels are printed onto the cap to easily identify locations according to the 10/20 electrode system.
The ActiveTwo head cap, for use only with the ActiveTwo system, was developed in cooperation with Dr. Peter Praamstra at the Behavioral Brain Sciences Center, University of Birmingham, United Kingdom. The head cap consists of an elastic cap with plastic electrode holders. The cap itself does not contain electrodes - only plastic electrode holders that receive the pin-type active electrodes.