The invention relates to a wire-shaped collector electrode (10), which can be laparascopically implanted into the pelvis and through the abdominal wall of a human body and which is arranged on the end side on a connection cable (13) that has an outside surface (20), for the neurostimulation of nerves. Said collector electrode comprises several outer segment electrodes (1-8) which can be contacted individually and/or in groups and are disposed axially one behind the other in the direction of the longitudinal extension of the collector electrode (12), wherein an insulating section (101-107) for the electrical insulation of the two respective adjacent outer segment electrodes is disposed axially between said respective two adjacent outer segment electrodes (1, 2 2, 3 3, 4 4, 5 5, 6 6, 7 7, 8). According to the invention, a visually perceptible direction marker (21) is provided on the outside surface (20) of the connection cable, at least in a cable section which is spaced apart from the axial ends (14, 15) of the connection cable and has an axial extension of at least 10 cm and/or 15% of the total length of the connection cable, said direction marker indicating the orientation of the connection cable to the operator.
