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Updated: May 25, 2026

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
06:04

Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

Published on: March 24, 2023

Speech recognition performance in children with cochlear implants using bimodal stimulation.

S B Rathna Kumar, P Mohanty, S G R Prakash

    Indian Journal of Otolaryngology and Head and Neck Surgery : Official Publication of the Association of Otolaryngologists of India
    |February 10, 2012
    PubMed
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    Bimodal stimulation, using a cochlear implant and a hearing aid, significantly improves speech understanding in noisy environments for children. This approach offers benefits in challenging listening conditions, enhancing auditory rehabilitation outcomes.

    Area of Science:

    • Audiology and Speech-Language Pathology
    • Biomedical Engineering
    • Pediatric Otolaryngology

    Background:

    • Cochlear implants provide good speech understanding in quiet but struggle in noisy environments.
    • Bimodal stimulation (cochlear implant + hearing aid) is underutilized in India despite reported benefits for speech-in-noise and preventing auditory deprivation.
    • Adverse listening conditions remain a significant challenge for cochlear implant users.

    Purpose of the Study:

    • To evaluate the benefits of bimodal stimulation in children within an Indian cochlear implant clinic.
    • To assess improvements in speech understanding with bimodal stimulation compared to cochlear implant alone, particularly in noise.

    Main Methods:

    • A cohort of 14 children using cochlear implants participated.
    Keywords:
    Auditory deprivationBimodal stimulationBinaural hearingCochlear implanteesSignal/Noise ratio

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  • Subjects were fitted with advanced digital hearing aids in their unaided ear to achieve bimodal stimulation.
  • Speech understanding was assessed in quiet and noisy environments.

    • Main Results:

    • Bimodal stimulation showed no significant improvement in speech scores in quiet conditions.
    • A noticeable improvement in speech understanding was observed in noisy environments with bimodal stimulation.
    • The findings indicate enhanced performance in adverse listening conditions.

    Conclusions:

    • Bimodal stimulation offers significant benefits for children with cochlear implants, especially in challenging, noisy listening situations.
    • This strategy enhances speech perception in noise, addressing a key limitation of cochlear implants alone.
    • The study supports the wider adoption of bimodal stimulation for pediatric cochlear implant users in India.