The electrodes have been designed with dry-contact electrode recordings in mind. The electrode cable is shielded enabling active shielding, and the design of the electrode housing is compact and the electrodes can be mounted in ear-EEG earpieces. The electrodes can also be used with gel as sticker electrodes on hairless areas or as cap electrodes in hairy areas of the scalp. Thus, the user can combine scalp EEG and ear-EEG recordings as preferred.

Please refer the following paper if you use our design, additional information on usage of the platform is available in the paper as well.
 Kappel et al., “Characterization of Dry-Contact EEG Electrodes and an Empirical Comparison of Ag/AgCl and IrO2 Electrodes”

The electrodes are based on a 3D printed housing with a sintered Ag/AgCl electrode pin inserted into the housing and connected to the coaxial wire, as shown below.

The construction is sealed with epoxy glue, to make it waterproof and mechanically robust. The coaxial lead to the electrodes enables active shielding all the way to the backside of each electrode.

Mechanical drawings of the electrode with measurements are available here.

3D Drawings of the electrode is available here.

If you wish to produce the electrodes for your own research, please contact Simon L. Kappel, slk@ece.au.dk.