Long-term evolution of the electrical stimulation for cochlear implant adult patients. The role of a progressive adaptation method.

In clinical experience patients who do not frequently check the cochlear implant (CI) maps have poor auditory performance and poor acceptance of map variations over time. The aim of the present study was to evaluate the effect of CI map optimization on both speech perception and subjective hearing in a group of CI patients with a long-standing map. 14 patients (6 females and 8 males; age range 16-77, mean age 45.