Dynamics of Auditory Plasticity after Cochlear Implantation: A Longitudinal Study

Human representational cortex may fundamentally alter its organization and (re)gain the capacity for auditory processing even when it is deprived of its input for more than two decades. Stimulus-evoked brain activity was recorded in post-lingual deaf patients after implantation of a cochlear prosthe...

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Bibliographic Details
Published in:Cerebral cortex (New York, N.Y. 1991) N.Y. 1991), 2006-01, Vol.16 (1), p.31-36
Main Authors: Pantev, C., Dinnesen, A., Ross, B., Wollbrink, A., Knief, A.
Format: Article
Language:English
Subjects:
Acoustic Stimulation - methods
Adult
auditory cortex
Auditory Cortex - physiopathology
Auditory Perception
auditory plasticity dynamics
Brain Mapping
cochlear implant
Cochlear Implantation - methods
Evoked Potentials, Auditory
Hearing Loss - physiopathology
Hearing Loss - rehabilitation
Hearing Loss - surgery
Humans
Magnetoencephalography
Middle Aged
Nerve Net - physiopathology
Neural Pathways - physiopathology
Neuronal Plasticity
Recovery of Function - physiology
Treatment Outcome
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Summary:Human representational cortex may fundamentally alter its organization and (re)gain the capacity for auditory processing even when it is deprived of its input for more than two decades. Stimulus-evoked brain activity was recorded in post-lingual deaf patients after implantation of a cochlear prosthesis, which partly restored their hearing. During a 2 year follow-up study this activity revealed almost normal component configuration and was localized in the auditory cortex, demonstrating adequacy of the cochlear implant stimulation. Evoked brain activity increased over several months after the cochlear implant was turned on. This is taken as a measure of the temporal dynamics of plasticity of the human auditory system after implantation of cochlear prosthesis.
ISSN:1047-3211
1460-2199
DOI:10.1093/cercor/bhi081