Binaural stimulation through cochlear implants in postlingual deafness: a positron emission tomographic study of word recognition.
Details
Serval ID
serval:BIB_BBC596A3C955
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Binaural stimulation through cochlear implants in postlingual deafness: a positron emission tomographic study of word recognition.
Journal
Otology and Neurotology
ISSN
1537-4505 (Electronic)
ISSN-L
1531-7129
Publication state
Published
Issued date
2011
Volume
32
Number
8
Pages
1210-1217
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov'tPublication Status: ppublish
Abstract
HYPOTHESIS: Bilateral stimulation through cochlear implants induces a brain activity pattern closer to the normal one than unilateral stimulation.
BACKGROUND: Although it has been shown that speech comprehension through bilateral cochlear implants leads to better performances than after unilateral implantation, the existence of neural underpinnings of this improvement remains to be studied.
METHODS: We performed an H2O positron emission tomographic study of word recognition in 5 patients with bilateral cochlear implants and 5 normal-hearing controls. Subjects had to distinguish words from nonwords in binaural and monaural conditions.
RESULTS: There was no overactivation in patients for binaural stimulation, with a hypoactivation in the right temporal cortex. For monaural stimulation, patients demonstrated more activation contralaterally to the stimulation side in the posterior temporal cortex and in the cerebellum.
CONCLUSION: Binaural stimulation through cochlear implants is advantageous compared with the monaural at the neurofunctional level because the pattern of brain activity is closer to the normal one.
BACKGROUND: Although it has been shown that speech comprehension through bilateral cochlear implants leads to better performances than after unilateral implantation, the existence of neural underpinnings of this improvement remains to be studied.
METHODS: We performed an H2O positron emission tomographic study of word recognition in 5 patients with bilateral cochlear implants and 5 normal-hearing controls. Subjects had to distinguish words from nonwords in binaural and monaural conditions.
RESULTS: There was no overactivation in patients for binaural stimulation, with a hypoactivation in the right temporal cortex. For monaural stimulation, patients demonstrated more activation contralaterally to the stimulation side in the posterior temporal cortex and in the cerebellum.
CONCLUSION: Binaural stimulation through cochlear implants is advantageous compared with the monaural at the neurofunctional level because the pattern of brain activity is closer to the normal one.
Keywords
Acoustic Stimulation, Adult, Aged, Cochlear Implantation, Cochlear Implants, Female, Hearing Loss, Sensorineural/physiopathology, Hearing Loss, Sensorineural/radionuclide imaging, Humans, Male, Middle Aged, Speech Perception/physiology, Temporal Lobe/physiopathology, Temporal Lobe/radionuclide imaging
Pubmed
Web of science
Create date
24/03/2013 11:54
Last modification date
20/08/2019 16:29
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