Fully objective hearing threshold estimation in cochlear implant users using phase-locking value growth functions

Simple item page
dc.contributor.authorMao, Darren
dc.contributor.authorInnes-Brown, Hamish
dc.contributor.authorPetoe, Matthew
dc.contributor.authorWong, Yan
dc.contributor.authorMcKay, Colette
dc.date.accessioned2020-03-02T04:04:42Z
dc.date.available2020-03-02T04:04:42Z
dc.date.issued2019-03
dc.description.abstractCochlear implant users require fitting of electrical threshold and comfort levels for optimal access to sound. In this study, we used single-channel cortical auditory evoked responses (CAEPs) obtained from 20 participants using a Nucleus device. A fully objective method to estimate threshold levels was developed, using growth function fitting and the peak phase-locking value feature. Results demonstrated that growth function fitting is a viable method for estimating threshold levels in cochlear implant users, with a strong correlation (r=0.979, p<0.001) with behavioral thresholds. Additionally, we compared the threshold estimates using CAEPs acquired from a standard montage (Cz to mastoid) against using a montage of recording channels near the cochlear implant, simulating recording from the device itself. The correlation between estimated and behavioural thresholds remained strong (r=0.966, p<0.001), however the recording time needed to be increased to produce a similar estimate accuracy. Finally, a method for estimating comfort levels was investigated, and showed that the comfort level estimates were mildly correlated with behavioral comfort levels (r=0.50, p=0.024).en_US
dc.description.sponsorshipDarren Mao was supported by an Australian Government Research Training Program Scholarship. Colette McKay was supported by a Veski innovation fellowship. Hamish Innes-Brown was supported by a National Health and Medical Research Council Early-Career Research Fellowship (Grant number 1069999). The Bionics Institute acknowledges the support it receives from the Victorian Government through its Operational Infrastructure Support Program.en_US
dc.identifier.citationMao, D., H. Innes-Brown, M. A. Petoe, Y. T. Wong, and C. M. McKay. 2019. Fully objective hearing threshold estimation in cochlear implant users using phase-locking value growth functions. Hearing Research. 377: 24-33.en_US
dc.identifier.issn0378-5955
dc.identifier.urihttp://repository.bionicsinstitute.org:8080/handle/123456789/389
dc.language.isoenen_US
dc.publisherElsevier B.V.en_US
dc.subjectCochlear implanten_US
dc.subjectElectrical dynamic rangeen_US
dc.subjectEEGen_US
dc.subjectObjective threshold estimationen_US
dc.subjectPhase-locking valueen_US
dc.subjectCortical responseen_US
dc.titleFully objective hearing threshold estimation in cochlear implant users using phase-locking value growth functionsen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
2019_Mao_Fullyobjective.pdf
Size:
278.31 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
BI publications