The invention relates to an electrode device (10) for cardiological or neurological electrodiagnosis and/or electrotherapy, comprising at least one elongated electrode body (20), which has a proximal side (18) and a distal side (24), wherein the electrode body (20) comprises at least one electrode (30, 40) on the distal side (24) for establishing electrical contact to the tissue and/or blood during use, wherein at least one of the electrodes (30, 40) is coated, at least in sections, with a dielectrically anisotropic material (46).
