Visual activity predicts auditory recovery from deafness after adult cochlear implantation.

Détails

ID Serval
serval:BIB_8F5E6D3AFA0C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Visual activity predicts auditory recovery from deafness after adult cochlear implantation.
Périodique
Brain
Auteur(s)
Strelnikov K., Rouger J., Demonet J.F., Lagleyre S., Fraysse B., Deguine O., Barone P.
ISSN
1460-2156 (Electronic)
ISSN-L
0006-8950
Statut éditorial
Publié
Date de publication
2013
Volume
136
Numéro
Pt 12
Pages
3682-3695
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Modern cochlear implantation technologies allow deaf patients to understand auditory speech; however, the implants deliver only a coarse auditory input and patients must use long-term adaptive processes to achieve coherent percepts. In adults with post-lingual deafness, the high progress of speech recovery is observed during the first year after cochlear implantation, but there is a large range of variability in the level of cochlear implant outcomes and the temporal evolution of recovery. It has been proposed that when profoundly deaf subjects receive a cochlear implant, the visual cross-modal reorganization of the brain is deleterious for auditory speech recovery. We tested this hypothesis in post-lingually deaf adults by analysing whether brain activity shortly after implantation correlated with the level of auditory recovery 6 months later. Based on brain activity induced by a speech-processing task, we found strong positive correlations in areas outside the auditory cortex. The highest positive correlations were found in the occipital cortex involved in visual processing, as well as in the posterior-temporal cortex known for audio-visual integration. The other area, which positively correlated with auditory speech recovery, was localized in the left inferior frontal area known for speech processing. Our results demonstrate that the visual modality's functional level is related to the proficiency level of auditory recovery. Based on the positive correlation of visual activity with auditory speech recovery, we suggest that visual modality may facilitate the perception of the word's auditory counterpart in communicative situations. The link demonstrated between visual activity and auditory speech perception indicates that visuoauditory synergy is crucial for cross-modal plasticity and fostering speech-comprehension recovery in adult cochlear-implanted deaf patients.
Mots-clé
Adult, Aged, Aged, 80 and over, Auditory Perception/physiology, Brain Mapping, Cerebral Cortex/physiopathology, Cochlear Implantation/rehabilitation, Cochlear Implants, Comprehension, Deafness/physiopathology, Deafness/surgery, Female, Humans, Male, Middle Aged, Nerve Net/radiography, Oxygen Radioisotopes, Photic Stimulation/methods, Positron-Emission Tomography, Predictive Value of Tests, Recovery of Function/physiology, Statistics, Nonparametric, Visual Perception/physiology
Pubmed
Web of science
Open Access
Oui
Création de la notice
16/01/2014 20:02
Dernière modification de la notice
08/05/2019 21:55
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