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How does visual language affect crossmodal plasticity and cochlear implant success?

Lyness, CR; Woll, B; Campbell, R; Cardin, V; (2013) How does visual language affect crossmodal plasticity and cochlear implant success? Neurosci Biobehav Rev , 37 (10 Par) pp. 2621-2630. 10.1016/j.neubiorev.2013.08.011. Green open access

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Abstract

Cochlear implants (CI) are the most successful intervention for ameliorating hearing loss in severely or profoundly deaf children. Despite this, educational performance in children with CI continues to lag behind their hearing peers. From animal models and human neuroimaging studies it has been proposed the integrative functions of auditory cortex are compromised by crossmodal plasticity. This has been argued to result partly from the use of a visual language. Here we argue that 'cochlear implant sensitive periods' comprise both auditory and language sensitive periods, and thus cannot be fully described with animal models. Despite prevailing assumptions, there is no evidence to link the use of a visual language to poorer CI outcome. Crossmodal reorganisation of auditory cortex occurs regardless of compensatory strategies, such as sign language, used by the deaf person. In contrast, language deprivation during early sensitive periods has been repeatedly linked to poor language outcomes. Language sensitive periods have largely been ignored when considering variation in CI outcome, leading to ill-founded recommendations concerning visual language in CI habilitation.

Type: Article
Title: How does visual language affect crossmodal plasticity and cochlear implant success?
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.neubiorev.2013.08.011
Publisher version: http://dx.doi.org/10.1016/j.neubiorev.2013.08.011
Additional information: © 2013 Elsevier Ltd. All rights reserved. This work is licensed under a Creative Commons Attribution 3.0 Unported License.
Keywords: Cochlear implant, Crossmodal reorganisation, Deafness, Delayed/insecure language acquisition, Functional decoupling
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Experimental Psychology
URI: https://discovery.ucl.ac.uk/id/eprint/1404528
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