For measuring functionality of an orifice in the human pelvic region an elongated probe (4) for insertion in the orifice is provided. The probe (4) comprises one or more electrodes (5a-6a, 5b-6b, 6a-7a, 6b-7b)； for stimulating receptors in tissue bounding the orifice and one or more pressure sensors (8a,8b,8c,9a,9b,9c,10a,10b,10c,10d,11a,11b,11c,12a,12b,12c) for sensing pressure exerted by tissue bounding the orifice. A control system (1) connected to the probe (4) is arranged for outputting a neurostimulation signal to the electrode or electrodes and for registering a pressure signal or signals from the pressure sensor or sensors during a time interval directly subsequent to the outputting of the neurostimulation signal.
