Provided is a perineal probe including a substantially cylindrical support rod in an insulating material, defining an axial direction and a circumferential direction, an end portion, constituting the inner end of said support rod, a grip for said perineal probe positioned on the support rod at the opposite end of said end portion, four electrodes positioned on the outer surface of the support rod, wherein each electrode extends for a circumferential portion ranging from 60° to 180°, wherein the electrodes are two by two aligned in an axial direction and reciprocally distanced in a circumferential direction, are in addition two by two aligned in a circumferential direction and distanced in an axial direction, and wherein each electrode is connected to a different electric output.
