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Related Experiment Videos

Phonetic inventory development in young cochlear implant users 6 years postoperation.

P J Blamey1, J G Barry, P Jacq

  • 1Department of Otolaryngology, University of Melbourne, East Melbourne, Australia. p.blamey@medoto.unimelb.edu.au

Journal of Speech, Language, and Hearing Research : JSLHR
|February 24, 2001
PubMed
Summary

Children with cochlear implants showed improved speech sound production over six years. While many sounds became intelligible, progress slowed in the sixth year, suggesting a plateau in phonetic development.

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Area of Science:

  • Speech-language pathology
  • Audiology
  • Linguistics

Background:

  • Cochlear implantation significantly impacts speech development in children.
  • Longitudinal studies are crucial for understanding the trajectory of speech sound acquisition post-implantation.

Purpose of the Study:

  • To track the development of phonetic inventories in children with cochlear implants over six years.
  • To identify specific speech sounds that pose challenges for children with cochlear implants.

Main Methods:

  • Longitudinal analysis of conversational speech samples from 9 children using cochlear implants.
  • Phonetic inventory assessment focusing on Australian English sounds.
  • Criterion of 50% correct production in conversational samples was used.

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Main Results:

  • 36 out of 44 Australian English phones reached the 50% intelligibility criterion in at least 5 children.
  • Speech intelligibility was generally good but not entirely natural.
  • The rate of improvement slowed significantly in the sixth year, indicating a potential performance plateau.

Conclusions:

  • Children with cochlear implants demonstrate progressive, albeit slow, gains in phonetic production.
  • Specific phonemes (/see text/) may present persistent challenges due to frequency, perceptual, or articulatory factors.
  • Further research into the specific difficulties of certain phonemes is warranted for targeted intervention.