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Objective assessment of electrode discrimination with the auditory change complex in adult cochlear implant users

Mathew, R; Undurraga, J; Li, G; Meerton, L; Boyle, P; Shaida, A; Selvadurai, D; ... Vickers, D; + view all (2017) Objective assessment of electrode discrimination with the auditory change complex in adult cochlear implant users. Hearing Research , 354 pp. 86-101. 10.1016/j.heares.2017.07.008. Green open access

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Abstract

The spatial auditory change complex (ACC) is a cortical response elicited by a change in place of stimulation. There is growing evidence that it provides a useful objective measure of electrode discrimination in cochlear implant (CI) users. To date, the spatial ACC has only been measured in relatively experienced CI users with one type of device. Early assessment of electrode discrimination could allow auditory stimulation to be optimized during a potentially sensitive period of auditory rehabilitation. In this study we used a direct stimulation paradigm to measure the spatial ACC in both pre- and post-lingually deafened adults. We show that it is feasible to measure the spatial ACC in different CI devices and as early as 1 week after CI switch-on. The spatial ACC has a strong relationship with performance on a behavioural discrimination task and in some cases provides information over and above behavioural testing. We suggest that it may be useful to measure the spatial ACC to guide auditory rehabilitation and improve hearing performance in CI users.

Type: Article
Title: Objective assessment of electrode discrimination with the auditory change complex in adult cochlear implant users
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.heares.2017.07.008
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Cochlear implant; Electrode discrimination; Auditory change complex; ACC Electroencephalography; Objective measures
UCL classification: UCL
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
URI: https://discovery.ucl.ac.uk/id/eprint/1567226
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