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Short-term auditory memory in children using cochlear implants and its relevance to receptive language.

P W Dawson1, P A Busby, C M McKay

  • 1The Bionic Ear Institute and Cochlear Limited, East Melbourne, Australia. PDawson@cochlear.com.au

Journal of Speech, Language, and Hearing Research : JSLHR
|August 30, 2002
PubMed
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Children with cochlear implants (CI) show weaker auditory and visual short-term memory (SSTM) than peers. However, their sequential memory is not specific to auditory input, and visual spatial memory best predicts language skills in the CI group.

Area of Science:

  • Neuroscience
  • Audiology
  • Developmental Psychology

Background:

  • Cochlear implants (CI) aim to restore hearing in deaf individuals.
  • Assessing cognitive functions like memory in children with CIs is crucial for understanding their development.
  • Short-term memory (SSTM) is vital for language acquisition and processing.

Purpose of the Study:

  • To evaluate auditory sequential, short-term memory (SSTM) in children with cochlear implants (CI).
  • To investigate the relationship between SSTM performance and receptive language skills in children with CIs.
  • To determine if auditory SSTM deficits are specific to the auditory modality in children with CIs.

Main Methods:

  • Twenty-four children (5-11 years) with Nucleus 22-electrode CIs and a control group with normal hearing (NH) were tested.

Related Experiment Videos

  • Auditory and visual SSTM tasks were administered, with auditory stimuli chosen to minimize discrimination difficulty.
  • Receptive language and nonverbal intelligence were assessed for all participants.

    • Main Results:

    • Children with CIs performed worse on auditory and visual SSTM tasks involving verbal or easily labelable stimuli compared to NH peers.
    • No significant difference in SSTM performance was found between CI and NH groups when stimuli were less likely to be verbally encoded.
    • The CI group did not exhibit a memory deficit specific to the auditory modality; auditory minus visual memory differences were comparable to the NH group.
    • SSTM performance significantly predicted receptive language in the CI group, but visual spatial memory was the strongest predictor.

    Conclusions:

    • Children with CIs have broader SSTM challenges, not limited to auditory processing.
    • Visual spatial memory appears to be a key factor influencing receptive language development in children with CIs.
    • Further research should explore the interplay between different memory systems and language outcomes in pediatric CI users.