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The relationship between electrical auditory brainstem responses and perceptual thresholds in Digisonic ® SP cochlear implant users

Abstract : Determining the electrical stimulation levels is often a difficult and time-consuming task because they are normally determined behaviorally - a particular challenge when dealing with pediatric patients. The evoked stapedius reflex threshold and the evoked compound action potential have already been shown to provide reasonable estimates of the C- and T-levels, although these estimates tend to overestimate the C- and T-levels. The aim of this study was to investigate whether the evoked auditory brainstem response (eABR) can also be used to reliably estimate a patient's C- and T-levels. The correlation between eABR detection thresholds and behaviorally measured perceptual thresholds was statistically significant (r = 0.71; P < 0.001). In addition, eABR Wave-V amplitude increased with increasing stimulation level for the three loudness levels tested. These results show that the eABR detection threshold can be used to estimate a patient's T-levels. In addition, Wave-V amplitude could provide a method for estimating C-levels in the future. The eABR objective measure may provide a useful cochlear implant fitting method - particularly for pediatric patients.
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https://hal.univ-lorraine.fr/hal-01713934
Contributor : Devah Ul <>
Submitted on : Wednesday, February 21, 2018 - 9:54:51 AM
Last modification on : Tuesday, October 13, 2020 - 10:47:01 AM

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Geoffrey Guenser, Jonathan Laudanski, Bertrand Phillipon, Bradford Backus, Philippe Bordure, et al.. The relationship between electrical auditory brainstem responses and perceptual thresholds in Digisonic ® SP cochlear implant users. Cochlear Implants International, Maney Publishing, 2015, 16 (1), pp.32 - 38. ⟨10.1179/1754762814Y.0000000082⟩. ⟨hal-01713934⟩

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