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Cross-modal plasticity and cochlear implants

Author

Listed:
  • Dong Soo Lee

    (Departments of Nuclear Medicine Seoul National University College of Medicine)

  • Jae Sung Lee

    (Departments of Nuclear Medicine Seoul National University College of Medicine
    Biomedical Engineering, Seoul National University College of Medicine)

  • Seung Ha Oh

    (Otolaryngology, Head and Neck Surgery, Seoul National University College of Medicine)

  • Seok-Ki Kim

    (Departments of Nuclear Medicine Seoul National University College of Medicine)

  • Jeung-Whoon Kim

    (Biomedical Engineering, Seoul National University College of Medicine)

  • June-Key Chung

    (Departments of Nuclear Medicine Seoul National University College of Medicine)

  • Myung Chul Lee

    (Departments of Nuclear Medicine Seoul National University College of Medicine)

  • Chong Sun Kim

    (Otolaryngology, Head and Neck Surgery, Seoul National University College of Medicine)

Abstract

Hearing in profoundly deaf people can be helped by inserting an implant into the inner ear to stimulate the cochlear nerve. This also boosts the low metabolic activity of the auditory cortex1, the region of the brain normally used for hearing. Other sensory modalities, such as sign language2, can also activate the auditory cortex, a phenomenon known as cross-modal plasticity. Here we show that when metabolism in the auditory cortex of prelingually deaf children (whose hearing was lost before they learned to talk) has been restored by cross-modal plasticity, the auditory cortex can no longer respond to signals from a cochlear implant installed afterwards. Neural substrates in the auditory cortex might therefore be routed permanently to other cognitive processes in prelingually deaf patients.

Suggested Citation

  • Dong Soo Lee & Jae Sung Lee & Seung Ha Oh & Seok-Ki Kim & Jeung-Whoon Kim & June-Key Chung & Myung Chul Lee & Chong Sun Kim, 2001. "Cross-modal plasticity and cochlear implants," Nature, Nature, vol. 409(6817), pages 149-150, January.
    • Handle: RePEc:nat:nature:v:409:y:2001:i:6817:d:10.1038_35051653
    DOI: 10.1038/35051653
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