The purpose of this study is to examine various preoperative factors that can play a role in
the auditory rehabilitation outcome of cochlear implant (CI) recipients. In order to determine
the level of integrity of central processing preoperatively, special attention was given to
residual hearing, duration of deafness, and cochlear nerve diameter as prognostic factors. A
cohort of 232 (272 CI implantations) postlingually deafened adults was evaluated in this
study. Hearing results at 1, 2 and up to 3 years postoperatively were compared with various …

Positioning the electrode array close to the modiolus is presumed to lead to better-localized
neural stimulation. The advantages of these so-called perimodiolar designs, include lower
stimulation levels, a larger dynamic range, better channel separation, and increased speech
understanding (29-32). Besides the position of the electrode array, the design of the
electrode itself is very important. The electrode is the all-important interface between the
electrical stimulus and the auditory nerve fibers that need to be stimulated. Telemetry can be …