Interleaved recording of the auditory brainstem response in sensorineural hearing loss

Type of content
Theses / Dissertations
Publisher's DOI/URI
Thesis discipline
Audiology
Degree name
Master of Audiology
Publisher
Journal Title
Journal ISSN
Volume Title
Language
English
Date
2022
Authors
Lien, Regina
Abstract

The auditory brainstem response (ABR) test is a far-field electrophysiological technique routinely used to estimate auditory thresholds, detecting auditory neuropathologies and intraoperative monitoring (Haddad et al., 2020; Hood, 1998; Jewett & Williston, 1971). Specifically, the ABR morphology and wave latencies are used as diagnostic indicators. To date, ABR is often evoked using transient acoustic stimuli (e.g., clicks and tone-burst) presented at low stimulus rate, and thousands of response averages are required to ensure adequate signal-to-noise ratio is achieved and diagnostic features of the responses are preserved. These translate to extended clinical time. Preliminary findings from the O’Beirne laboratory, using the custom-written software developed by the laboratory which delivers interleaving clicks stimuli, demonstrated that the ABR diagnostic features obtained in normal hearing (NH) participants using rapid interleaved stimuli between both ears (binaural) were of comparable quality to those recorded in current clinical setting (monaurally) (Bencito, 2020). This research aims to further investigate whether the benefits extend to adults with sensorineural (SN) hearing impairment. Specifically, whether wave V latencies obtained from rapid interleaving stimuli are significantly different from monaural conditions (slow and fast rates) in SNHI participants. The ABRs were evoked with clicks at rapid interleaving conditions which the stimulus alternate between the ears (i.e., 45.5/s to each ear, 90.9/s overall); clicks delivered monaurally at the slow rate (monaural slow; 45.5/s); and clicks delivered monaurally at the fast rate (monaural fast; 90.9/s). Our results demonstrated the benefit of the most rapid interleaving clicks paradigm used by Bencito, 2020 were translatable to the participants with SN hearing loss in this study. The rapid rate interleaved condition showed no significant change in the wave V latency compared to the conventional monaural slow paradigm. Furthermore, a significant increase in the wave V latency of monaural fast condition was shown compared to interleaved condition. The study further demonstrated the potential clinical benefit, primarily in testing time, of the use of the interleaved paradigm compared to the current conventional sequential method of auditory brainstem recording in adult population with SN hearing loss.

Description
Citation
Keywords
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Rights
All Rights Reserved