An electrode unit for measuring physiological electrical activity in a subject is provided. The electrode unit comprises a base material, an electrode, a connector, a conductive ribbon, a space limiting module, and a film. The base material includes a first base material layer and a second base material layer. The electrode is inserted in an opening of the first base material layer. The conductive ribbon is placed on the first base material layer. The conductive ribbon connects the electrode and the connector. The connector is placed inside the space limiting module. The space limiting module is placed inside an opening of the film. The second base material layer is placed on top of the conductive ribbon. The film is placed over the first base material layer and the second base material layer.
ELECTRODE UNIT FOR MEASURING ELECTROPHYSIOLOGICAL SIGNALS