Electrical stimulation electrodes and electrical stimulation of a person

A stimulation electrode comprising: a dielectric substrate (10); an electrically conductive layer on the dielectric substrate (10), the electrically conductive layer comprising first and second electrically conductive areas (11a,11b,12a,12b), and first and second electrically conductive tracks (16,17) connected with the first and second areas (11a,11b,12a,12b), respectively; a dielectric layer (20) at least covering the conductive tracks (16,17); an adhesive layer (19) at least on a portion of the dielectric layer (20); and an electrically conductive hydrogel layer (18) covering at least each of: the first electrically conductive area (11a, 11b), the second electrically conductive area (12a,12b) and the opening (15); the second electrically conductive area (12a,12b) encloses the first electrically conductive area (11a,11b); and the second electrically conductive area (12a,12b) defining an opening (15) forming a passageway through which the first electrically conductive track (16) passes.