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Updated: Sep 21, 2026
Robotic Cochlear Implantation for Direct Cochlear Access
Published on: June 16, 2022
Cochlear implantation for progressive hearing loss
R F Gray1, S E M Jones, I Court
1The East Anglian Cochlear Implant Programme, Addenbrooke's Hospital, Cambridge, UK. pauline.sparks@addenbrookes.nhs.uk
Insights
Cochlear implantation may benefit older children with progressive congenital deafness who experienced hearing loss after initial progress with hearing aids. This challenges the strict "window of opportunity" for speech development.
Area of Science:
- Audiology
- Pediatric Medicine
- Speech-Language Pathology
Background:
- Neural plasticity and early language acquisition support pre-5 years cochlear implantation for congenital deafness.
- Older children are often deprioritized due to the perceived closure of the critical language learning window.
Observation:
- A subgroup of congenitally deaf children experiences hearing deterioration despite initial progress with hearing aids.
- This hearing loss arrests speech development, necessitating intervention.
Findings:
- The study summarizes the progress, deterioration, and post-implantation outcomes for six children with progressive congenital deafness.
- These cases highlight a potential for speech development beyond the traditional critical period.
Implications:
- Cochlear implantation should be considered for older children with progressive congenital deafness.
- Re-evaluation of the
- window of opportunity
- concept is warranted for specific patient subgroups.
Abstract:
The concept of neural plasticity and the early natural abilities of hearing children to acquire speech and language without instruction have led many authorities to advocate cochlear implantation before the age of 5 years in congenital deafness. Older children therefore become lower priority for scarce public funds because they are perceived to have passed the "window of opportunity" to learn speech, even if hearing is restored, and continue to rely on sign language. This paper shows that a subgroup of congenitally deaf children exists, who, having made good progress with conventional hearing aids, suffer a sudden or progressive hearing deterioration which arrests the speech development. Sixty children have been implanted in the Cambridge Programme, half for meningitis or other acquired losses and half for congenital prelingual deafness. Six of this latter group were congenital but progressive; their progress, deterioration, and improvement after implantation are summarised.
