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Updated: Jul 11, 2026
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Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
Published on: January 9, 2019
Deprivation-induced cortical reorganization in children with cochlear implants
Anu Sharma1, Phillip M Gilley, Michael F Dorman
1Brain and Behavior Laboratory, Dept. of Speech Language and Hearing Sciences, University of Colorado at Boulder, CO 80309-0409, USA. anu.sharma@colorado.edu
International Journal of Audiology
|September 11, 2007
Summary
Cortical areas reorganize after stimulus deprivation. This review covers electroencephalography studies on auditory pathway development, sensitive periods, and new magnetoencephalography evidence of cross-modal plasticity.
Area of Science:
- Neurophysiology
- Developmental Neuroscience
- Auditory Neuroscience
Background:
- Cortical plasticity is a fundamental aspect of neurodevelopment.
- Stimulus deprivation can induce significant changes in cortical organization.
- Understanding these changes is crucial for addressing developmental disorders.
Purpose of the Study:
- To review electroencephalography (EEG) studies on central auditory pathway development.
- To examine sensitive periods for auditory development in children with cochlear implants.
- To explore mechanisms of cortical reorganization and cross-modal plasticity.
Main Methods:
- Review of electroencephalography (EEG) studies.
- Analysis of data from children with congenital deafness and cochlear implants.
- Inclusion of findings from animal models.
- Presentation of new magnetoencephalography (MEG) evidence.
Main Results:
- Cortical areas demonstrate reorganization following stimulus deprivation.
- Sensitive periods for central auditory development have defined age cut-offs.
- Evidence suggests somatosensory cross-modal plasticity after long-term auditory deprivation.
Conclusions:
- Developmental neurophysiology highlights cortical reorganization as a response to stimulus deprivation.
- Sensitive periods in auditory development are critical for intervention.
- Cross-modal plasticity offers insights into brain adaptation to sensory loss.