Main objective:
Investigate on new cochlear implanted patients whether the FineHearing strategy of the MED-EL cochlear implant gives better results on musical perception if the depth of stimulation (stimulation or not of the apical areas) is greater.
Secondary objectives:
Evaluate the effect of stimulation depth on vocal audiometric results, results of differential frequency threshold test and on qualitative sound perception.
Adult patient (≥ 18 years old) speaking French
Patient who fulfils the criteria for cochlear implantation
Patient with a postoperative insertion angle of the apical electrode > 450°
Patient with 12 active electrodes on the day of activation.
Retro-cochlear pathology: auditory neuropathy, vestibular schwannoma