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Related Experiment Video

Updated: Jul 1, 2026

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation
06:54

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Published on: August 4, 2023

Verbal self-monitoring in deaf subjects using cochlear implants.

Y Naito1, I Honjo

  • 1Department of Hearing and Speech Sciences, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto 606-8507, Japan. naito@hs.m.kuhp.kyoto-u.ac.jp

Cochlear Implants International
|September 16, 2008
PubMed
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Cochlear implant users show unique temporal cortex activation during vocalization, suggesting they may monitor their own speech. These verbal self-monitoring mechanisms appear similar to those used for processing external speech.

Area of Science:

  • Neuroscience
  • Audiology
  • Speech-Language Pathology

Background:

  • Understanding verbal self-monitoring is crucial for cochlear implant (CI) users.
  • Previous studies on cortical activation during vocalization in normal-hearing subjects provide a baseline.
  • Investigating self-monitoring in CI users may reveal adaptations in auditory processing.

Purpose of the Study:

  • To investigate cortical activation patterns during vocalization in cochlear implant users.
  • To elucidate the mechanisms of verbal self-monitoring in individuals with post-lingual deafness and CI use.
  • To compare activation patterns with those of normal-hearing individuals.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) or similar neuroimaging technique.

Related Experiment Videos

Last Updated: Jul 1, 2026

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation
06:54

Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation

Published on: August 4, 2023

  • Inclusion of six post-lingually deafened subjects using cochlear implants.
  • Analysis of cortical activation during tasks such as reading sentences aloud and listening to speech.

    • Main Results:

    • Significant bilateral temporal cortex activation observed in CI users during reading aloud.
    • Activation patterns during vocalization were similar to those during listening to external speech.
    • Identical activation foci in the middle temporal gyri for both tasks in CI users.

    Conclusions:

    • Cochlear implant users exhibit distinct cortical activation during vocalization compared to normal-hearing individuals.
    • These findings suggest that CI users may employ verbal self-monitoring during speech production.
    • The mechanisms for self-monitoring in CI users likely involve neural pathways also used for processing external auditory stimuli.