Mapping & Activation
What is cochlear implant mapping?
Mapping is the audiologist's process of programming the CI processor so that sounds are comfortable, audible and meaningful for the individual user.
Each user's auditory nerve responds slightly differently. Mapping fine-tunes electrical stimulation parameters for each electrode — threshold (T level), comfort (C/MCL level), pulse rate and processing strategy. The audiologist uses behavioural feedback for older children/adults and objective measures (NRT/AESR/ESRT) for younger children.
Maps are saved as 'programs' in the processor. Users can switch between programs (e.g. quiet, noise, music) using the processor or app.
Medical disclaimer: This information is for awareness and education only. It does not replace consultation with a qualified ENT surgeon, audiologist or medical professional. Cochlear implant eligibility must be determined after clinical evaluation and diagnostic testing.
Reviewed by HearClear Clinical Editorial Team · Last reviewed: 2026-06-15