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Crossmodal compensation and brain plasticity after deafness and cochlear implantation| old_uid | 14421 |
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| title | Crossmodal compensation and brain plasticity after deafness and cochlear implantation |
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| start_date | 2014/10/06 |
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| schedule | 11h |
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| online | no |
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| details | Invité par l'équipe Perception-Action |
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| summary | Research with humans and animals has shown that the loss of a given sensory modality may lead to compensatory mechanisms and increased reliance on the remaining modalities. In the case of deafness, the acquisition of visual skills is one of the sensory substitution strategies developed by patients to recover social communication. This crossmodal compensation is accompanied by important functional reorganizations expressed by the colonization of the deprived cortical areas by the spared modalities. However we took the opportunity to study the crossmodal reorganization that can occur in profoundly deaf adult patients with a cochlear implant (CI). The CI is a neuroprosthesis that can efficiently allow postlingual deaf subjects to recover auditory functions especially speech intelligibility. A cochlear implant allows post-lingual adult deaf patients to understand speech through long-term adaptative processes to build coherent percepts from the coarse information delivered by the implant. Because the success of rehabilitations relies on the functional plasticity in the auditory system, it is of crucial importance to understand the reorganization of the cortical network involved in speech comprehension that occurs during deafness and following the progressive recovery.
Thus, the access to CI patients allows the unique possibility to analyze the cortical reorganization induced by a long period of deafness and its “mirror-image” when the auditory function is rescued by the implant. |
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| responsibles | Rämä, Izard |
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