There is provided a cochlear implant system, comprising a sound processor for generating an auditory nerve stimulation signal from an input audio signal； an implantable stimulation assembly comprising an electrode array for electrical stimulation of the cochlea according to the neural stimulation signal； and an electrode migration monitoring unit including a unit for capturing ECAP signals induced at the electrodes of the electrode array in response to stimulation of the cochlea by applying auditory nerve stimulation signals to the electrodes, an electrode migration detection unit for detecting electrode migration relative to the cochlea by comparing presently captured ECAP signals and/or ECAP data derived from such presently captured ECAP signals to stored previously captured ECAP signals and/or ECAP data derived from such previously captured ECAP signals, and a unit for outputting an alarm signal in case that electrode migration is detected by the electrode migration detection unit.
