Cochlear Implant Mapping
The programming process by which an audiologist sets the stimulation parameters of a cochlear implant's speech processor to optimise hearing perception for the individual recipient.
Full Definition
Cochlear implant mapping (also called 'programming' or 'fitting' in some centres) involves adjusting the threshold (T-level) and most comfortable loudness (C-level or M-level) for each electrode in the implant array. These parameters determine the electrical dynamic range that the device uses to encode incoming acoustic signals. Mapping sessions typically occur frequently in the initial months post-activation and then at longer intervals. Editors should note that 'mapping' is the standard preferred term in most English-speaking audiology contexts; 'programming' is acceptable but less precise. The term 'map' (noun) refers to the saved set of parameters on the device, so 'map' and 'mapping' serve distinct grammatical and clinical functions in documentation.
Usage
Usage note: Distinguish 'map' (noun: a saved programme) from 'mapping' (noun: the programming procedure); the two are often conflated in patient correspondence.
In Context
- "Cochlear implant mapping at the three-month post-activation visit revealed the need to reduce stimulation levels on electrodes 8 through 12 due to patient discomfort." — Cochlear implant programming session report
- "'Mapping' and 'activation' are not synonymous—activation refers to the first switch-on, whereas mapping is the ongoing adjustment process." — Editorial note for cochlear implant documentation