We developed a novel dry biological electrode comprising biocompatible organic conductive polymer, PEDOT/PSS, supported by carbon particle. Applying a thermo plastic elastomer as a base material of the electrode, it can be easily molded into different shapes. It has biologically safe and enables comfortable wearing with soft texture. Moreover, the electrode realizes low skin-electrode contact impedance comparable to that of PEDOT/PSS polymer. We measured electroencephalogram (EEG) using a pin-shaped dry electrode made of the developed material. The Results showed that EEG signal measured by the developed electrode show almost the same quality as that by a conventional wet electrode. In addition, no mechanical damage was observed after repeated use because of the composite structure. Therefore, this biological electrode is suitable for EEG measurement in daily life.
