Cortical Plasticity after Cochlear Implantation
Joint Authors
Petersen, B.
Wallentin, M.
Gjedde, A.
Vuust, Peter
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-26
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
The most dramatic progress in the restoration of hearing takes place in the first months after cochlear implantation.
To map the brain activity underlying this process, we used positron emission tomography at three time points: within 14 days, three months, and six months after switch-on.
Fifteen recently implanted adult implant recipients listened to running speech or speech-like noise in four sequential PET sessions at each milestone.
CI listeners with postlingual hearing loss showed differential activation of left superior temporal gyrus during speech and speech-like stimuli, unlike CI listeners with prelingual hearing loss.
Furthermore, Broca’s area was activated as an effect of time, but only in CI listeners with postlingual hearing loss.
The study demonstrates that adaptation to the cochlear implant is highly related to the history of hearing loss.
Speech processing in patients whose hearing loss occurred after the acquisition of language involves brain areas associated with speech comprehension, which is not the case for patients whose hearing loss occurred before the acquisition of language.
Finally, the findings confirm the key role of Broca’s area in restoration of speech perception, but only in individuals in whom Broca’s area has been active prior to the loss of hearing.
American Psychological Association (APA)
Petersen, B.& Gjedde, A.& Wallentin, M.& Vuust, Peter. 2013. Cortical Plasticity after Cochlear Implantation. Neural Plasticity،Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-463105
Modern Language Association (MLA)
Petersen, B.…[et al.]. Cortical Plasticity after Cochlear Implantation. Neural Plasticity No. 2013 (2013), pp.1-11.
https://search.emarefa.net/detail/BIM-463105
American Medical Association (AMA)
Petersen, B.& Gjedde, A.& Wallentin, M.& Vuust, Peter. Cortical Plasticity after Cochlear Implantation. Neural Plasticity. 2013. Vol. 2013, no. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-463105
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-463105