International Journal of Speech and Audiology
2025, Vol. 6, Issue 2, Part B
Electrical dynamic range (EDR) and its effect in pre-lingual children implanted during the critical period
Author(s): Hannah Baby, Suman N and Mohammad Noushad V
Abstract: The cochlear implantation surgery during the critical period of child’s development has shown significant effect on the spoken language development. The Electrical Dynamic Range (EDR) is one of the key parameters to be considered during mapping. The purpose of this study was to investigate the longitudinal changes in the electrical dynamic range of cochlear implants and determine if age at implantation significantly influences this pattern over the first year of device use in pre-lingually deaf children. This prospective study included 27 unilaterally implanted children (CI 422 implant with CP802 processor) who were categorized into three groups based on implantation age: Group 1 (1–2 years; n=10), Group 2 (2–3 years; n=10), and Group 3 (3–4 years; n=7). The dynamic range (DR), calculated as the difference between behavioral threshold (T) and comfort (C) levels, was tracked from the time of switch-on through follow-up visits at 1, 3, 6, and 12 months. Analysis of the longitudinal data suggest that among children implanted before the age of four, the specific age at implantation does not significantly influence the long-term pattern of dynamic range changes.
DOI: 10.22271/27103846.2025.v6.i2b.91
Pages: 107-108 | Views: 219 | Downloads: 130
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How to cite this article:
Hannah Baby, Suman N and Mohammad Noushad V. Electrical dynamic range (EDR) and its effect in pre-lingual children implanted during the critical period. International Journal of Speech and Audiology. 2025; 6(2): 107-108. DOI: 10.22271/27103846.2025.v6.i2b.91
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