Electrode Configuration for Auditory Brainstem Response Audiometry

A vertical recording montage (C z to the seventh cervical vertebra or C 7 ) has been shown to yield significantly lower auditory brainstem response (ABR) threshold when compared with a horizontal or anterior-posterior montage (Sininger & Don, 1989). The present study further examines the relationship between electrode placement and the amplitude of the ABR to low-level stimuli. Four electrode arrays were compared—the commonly-used clinical configuration of forehead to ipsilateral mastoid, the vertical array from the previous study (C z to C 7 ), and two additional montages employing linked mastoids as reference to either the vertex or forehead electrode. ABRs were recorded simultaneously in four channels in response to 8000 click stimuli at 10, 20, and 30 dB SL from 9 male and 9 female adult subjects with normal hearing. The effect of electrode channel was significant at <.0001, with the vertical channel revealing the largest wave V amplitudes at all stimulus levels. Female subjects, as expected, produced larger ABR amplitudes than male subjects in all recording conditions, but electrode-channel effects were independent of gender.

Download Full-text

Auditory Brainstem Response Measurements in Newborns: Which Electrode Placement Is Better?

Turkish Archives of Otorhinolaryngology ◽

10.5152/tao.2020.5065 ◽

2020 ◽

Vol 58 (2) ◽

pp. 112-117

Author(s):

Oznur Yigit ◽

◽

Merve Ozbal Batuk ◽

Betul Cicek Cinar ◽

Mehtap Yildirim ◽

...

Keyword(s):

Auditory Brainstem Response ◽

Auditory Brainstem ◽

Electrode Placement ◽

Brainstem Response

Download Full-text

Comparison of Electrically Evoked Whole-Nerve Action Potential and Electrically Evoked Auditory Brainstem Response Thresholds in Nucleus CI24R Cochlear Implant Recipients

Journal of the American Academy of Audiology ◽

10.1055/s-0040-1716005 ◽

2002 ◽

Vol 13 (08) ◽

pp. 416-427 ◽

Cited By ~ 5

Author(s):

Marcia J. Hay-McCutcheon ◽

Carolyn J. Brown ◽

Kelly Schmidt Clay ◽

Keely Seyle

Keyword(s):

Action Potential ◽

Cochlear Implant ◽

Auditory Brainstem Response ◽

Electrode Array ◽

Auditory Brainstem ◽

Electrode Arrays ◽

Direct Stimulation ◽

Nerve Action ◽

Brainstem Response ◽

Response Thresholds

In this study, differences between electrically evoked whole-nerve action potential (EAP) and electrically evoked auditory brainstem response (EABR) measurements within Nucleus CI24R cochlear implant recipients were evaluated. Precurved modiolus-hugging internal electrode arrays, such as the CI24R, are designed to provide more direct stimulation of neural elements of the modiolus. If the electrode array is closer to the modiolus, electrically evoked and behavioral levels might be lower than were previously recorded for the straight electrode array, the CI24M. EAP and EABR growth functions and behavioral levels were obtained for 10 postlingually deafened adults. Results revealed no significant differences between EAP and EABR threshold levels, and these levels were not significantly lower than those obtained using the CI24M.

Download Full-text

Effectiveness of Simulation Training on Graduate Audiology Students' Auditory Brainstem Response Testing Skills

American Journal of Audiology ◽

10.1044/2021_aja-20-00191 ◽

2021 ◽

pp. 1-10

Author(s):

Amanda Reed ◽

Alexandra Andre ◽

Saradha Ananthakrishnan ◽

Peggy Korczak

Keyword(s):

Auditory Brainstem Response ◽

Clinical Training ◽

Clinical Skills ◽

Clinical Skill ◽

Auditory Brainstem ◽

Electrode Placement ◽

Skills Assessment ◽

Scalp Electrode ◽

Simulation Based ◽

Brainstem Response

Purpose Simulation is a tool commonly used in the clinical training of students within the health professions fields, such as medicine and nursing. The effectiveness of simulation as a teaching technique has been extensively documented in numerous health care professions; however, little is known about the effectiveness of simulation techniques in audiology education. This study assesses the effectiveness of a simulation activity focused on auditory brainstem response (ABR) testing conducted with students of an applied doctoral program in audiology. Method Twelve 2nd year audiology graduate students enrolled in the auditory electrophysiology course at Towson University in Fall 2018 participated in this pre–post study. Over a 3-week period, each student (a) received didactic instruction in ABR testing, (b) underwent a presimulation exercise skills assessment, (c) participated in a simulation exercise, and (d) underwent a postsimulation exercise skills assessment. Results Significant improvements were observed in clinical skill level for the ABR tasks evaluated in terms of both accuracy and efficiency (time in seconds needed to complete the task). The tasks evaluated included skin preparation, identification of scalp electrode placement sites, and scalp electrode placement in a variety of configurations (single- and two-channel arrays, horizontal and vertical electrode montages). Benefits associated with simulation-based instruction varied by clinical skill as well as by student. Conclusions The data described in this study reinforce the need to incorporate simulation in audiology training programs, especially for complex clinical skills. It also emphasizes the need for additional research that can be useful in the design and implementation of simulation-based exercises.

Download Full-text