Effects of Different Electrode Configurations on the Narrow Band Level-Specific CE-Chirp and Tone-Burst Auditory Brainstem Response at Multiple Intensity Levels and Frequencies in Subjects With Normal Hearing Purpose The purpose of this study was to investigate the influence of 2 different electrode montages (ipsilateral and vertical) on the auditory brainstem response (ABR) findings elicited from narrow band (NB) level-specific (LS) CE-Chirp and tone-burst in subjects with normal hearing at several intensity levels and frequency combinations. ... Research Article
Research Article  |   September 12, 2018
Effects of Different Electrode Configurations on the Narrow Band Level-Specific CE-Chirp and Tone-Burst Auditory Brainstem Response at Multiple Intensity Levels and Frequencies in Subjects With Normal Hearing
 
Author Affiliations & Notes
  • Ahmad Aidil Arafat Dzulkarnain
    Department of Audiology and Speech-Language Pathology, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuala Lumpur
  • Siti Aisyah Abdullah
    Department of Audiology and Speech-Language Pathology, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuala Lumpur
  • Muhammad Amar Mohd Ruzai
    Department of Audiology and Speech-Language Pathology, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuala Lumpur
  • Siti Hajra Mu'minah Noor Ibrahim
    Department of Audiology and Speech-Language Pathology, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuala Lumpur
  • Nur Farah Aida Anuar
    Department of Audiology and Speech-Language Pathology, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuala Lumpur
  • ˈAfaf Ezzaty Abdul Rahim
    Department of Audiology and Speech-Language Pathology, Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuala Lumpur
  • Disclosure: The present study used a loan equipment of Interacoustic Eclipse EP-25 system provided by Oticon Malaysia Sdn Bhd. No financial interest involved in this loan equipment unit and Oticon Malaysia Sdn Bhd did not provide any conditions attached for this purposes.
    Disclosure: The present study used a loan equipment of Interacoustic Eclipse EP-25 system provided by Oticon Malaysia Sdn Bhd. No financial interest involved in this loan equipment unit and Oticon Malaysia Sdn Bhd did not provide any conditions attached for this purposes. ×
  • Correspondence to Ahmad Aidil Arafat Dzulkarnain: a.aidil@gmail.com
  • Editor-in-Chief: Sumitrajit (Sumit) Dhar
    Editor-in-Chief: Sumitrajit (Sumit) Dhar×
  • Editor: Ann Eddins
    Editor: Ann Eddins×
Article Information
Hearing & Speech Perception / Hearing Disorders / Research Articles
Research Article   |   September 12, 2018
Effects of Different Electrode Configurations on the Narrow Band Level-Specific CE-Chirp and Tone-Burst Auditory Brainstem Response at Multiple Intensity Levels and Frequencies in Subjects With Normal Hearing
American Journal of Audiology, September 2018, Vol. 27, 294-305. doi:10.1044/2018_AJA-17-0087
History: Received September 1, 2017 , Revised December 23, 2017 , Accepted April 18, 2018
 
American Journal of Audiology, September 2018, Vol. 27, 294-305. doi:10.1044/2018_AJA-17-0087
History: Received September 1, 2017; Revised December 23, 2017; Accepted April 18, 2018

Purpose The purpose of this study was to investigate the influence of 2 different electrode montages (ipsilateral and vertical) on the auditory brainstem response (ABR) findings elicited from narrow band (NB) level-specific (LS) CE-Chirp and tone-burst in subjects with normal hearing at several intensity levels and frequency combinations.

Method Quasi-experimental and repeated-measures study designs were used in this study. Twenty-six adults with normal hearing (17 females, 9 males) participated. ABRs were acquired from the study participants at 3 intensity levels (80, 60, and 40 dB nHL), 3 frequencies (500, 1000, and 2000 Hz), 2 electrode montages (ipsilateral and vertical), and 2 stimuli (NB LS CE-Chirp and tone-burst) using 2 stopping criteria (fixed averages at 4,000 sweeps and F test at multiple points = 3.1).

Results Wave V amplitudes were only 19%–26% larger for the vertical recordings than the ipsilateral recordings in both the ABRs obtained from the NB LS CE-Chirp and tone-burst stimuli. The mean differences in the F test at multiple points values and the residual noise levels between the ABRs obtained from the vertical and ipsilateral montages were statistically not significant. In addition, the ABR elicited from the NB LS CE-Chirp was significantly larger (up to 69%) than those from the tone-burst, except at the lower intensity level.

Conclusion Both the ipsilateral and vertical montages can be used to record ABR to the NB LS CE-Chirp because of the small enhancement in the wave V amplitude provided by the vertical montage.

Acknowledgments
The authors wish to acknowledge the Ministry of Higher Education of Malaysia through the Fundamental Research Grant Scheme (15-236-0477) and the International Islamic University Malaysia through the Research Initiative Grant Scheme (15-035-0035 and 16-125-0289), awarded to Dr. Ahmad Aidil Arafat Dzulkarnain (first author), for funding this research. The authors also wish to acknowledge the contribution from Oticon Malaysia Sdn Bhd for providing a loan Interacoustic Eclipse EP-25 system for this study. The authors also wish to acknowledge Sarah Rahmat for her valuable support on the statistical analysis of this article.
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