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Optimizing dynamic range in children using the nucleus cochlear implant.

P W Dawson1, J A Decker, C E Psarros

  • 1Cooperative Research Centre for Cochlear Implant and Hearing Aid Innovation, Melbourne, Australia. pdawson@cochlear.com.au

Ear and Hearing
|June 5, 2004
PubMed
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Adaptive Dynamic Range Optimization (ADRO) significantly improved speech perception in quiet and noise for children with Nucleus cochlear implants. This programming option offers benefits for young users and selective use for older children.

Area of Science:

  • Audiology
  • Speech-Language Pathology
  • Biomedical Engineering

Background:

  • Cochlear implants are crucial for hearing restoration in children.
  • Adult studies suggest Adaptive Dynamic Range Optimization (ADRO) enhances sound quality and speech perception.
  • The efficacy of ADRO in pediatric cochlear implant users requires further investigation.

Purpose of the Study:

  • To evaluate the benefits of the Adaptive Dynamic Range Optimization (ADRO) preprocessing scheme in children using Nucleus cochlear implants.
  • To compare speech perception and sound quality between the ADRO program and the standard program in pediatric users.

Main Methods:

  • Children used the ADRO scheme for 4 weeks, with a mandatory 2-week "locked-in" period.
  • Bench-Kowal-Bamford (BKB) sentence perception in quiet and noise was assessed at 1 and 4 weeks.

Related Experiment Videos

  • Children rated sound loudness and program preference in everyday listening scenarios.

    • Main Results:

    • Significant improvements in BKB sentence perception in quiet (8.60%) and in noise (6.87%) were observed with the ADRO program.
    • The ADRO program was preferred in 46% of listening situations, compared to 26% for the standard program.
    • Everyday sounds were not perceived as unacceptably loud with the ADRO program.

    Conclusions:

    • The ADRO scheme provides measurable benefits for children with Nucleus cochlear implants in both quiet and noisy environments.
    • Locking in the ADRO programming option is recommended for young children once their MAP levels stabilize.
    • Older children and teenagers may benefit from selectively using ADRO for specific listening situations.