Measurement of auditory brain function in cochlear implant recipients using MEG
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1
Macquarie University, Cognitive Science, Australia
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2
Macquarie University, Lingustics, Australia
By restoring input into a brain that has experienced profound sensory deprivation, cochlear implants provide a powerful experimental approach to studying the effects of deafness on the human auditory system; the capacity of the system to reorganise after the re-establishment of sensory inputs; variations in this capacity over the lifespan; and the functional interactions of the auditory system with higher order cognitive systems including reading and language. However to date it has been largely impossible to study these effects in the human brain, because the materials and operation of the implants strongly interfere with functional neuroimaging devices like functional magnetic resonance imaging and MEG. Here we describe a novel MEG neuroimaging system that has been designed to enable routine measurements of auditory cortical function in cochlear implant recipients, while coping with the electromagnetic artefacts of the implant. This new system provides a new window into the brains of cochlear implants recipients and will allow us to study how deafness alters the functioning of the brain and the extent to which these functional alterations can later be reversed by a cochlear prosthesis.
Keywords:
Auditory Cortex,
Cochlear Implants,
Deafness,
Magnetoencephalography,
brain plasticity
Conference:
XII International Conference on Cognitive Neuroscience (ICON-XII), Brisbane, Queensland, Australia, 27 Jul - 31 Jul, 2014.
Presentation Type:
Poster
Topic:
Language
Citation:
Johnson
B,
Meng
D and
Crain
S
(2015). Measurement of auditory brain function in cochlear implant recipients using MEG.
Conference Abstract:
XII International Conference on Cognitive Neuroscience (ICON-XII).
doi: 10.3389/conf.fnhum.2015.217.00277
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Received:
19 Feb 2015;
Published Online:
24 Apr 2015.
*
Correspondence:
Prof. Blake Johnson, Macquarie University, Cognitive Science, Sydney, Australia, blake.johnson@mq.edu.au