272
Views
7
CrossRef citations to date
0
Altmetric
Original Article

Objective evaluation of binaural summation through acoustic reflex measures

&
Pages 493-501 | Received 17 Jun 2017, Accepted 29 Jan 2018, Published online: 12 Feb 2018
 

Abstract

Objective: A previous study [Rawool, V. W. (2016). Auditory processing deficits: Assessment and intervention. New York, NY: Thieme Medical Publishers, Inc., pp. 186–187] demonstrated objective assessment of binaural summation through right contralateral acoustic reflex thresholds (ARTs) in women. The current project examined if previous findings could be generalised to men and to the left ear. Design: Cross-sectional. Study sample: Sixty individuals participated in the study. Left and right contralateral ARTs were obtained in two conditions. In the alternated condition, the probe tone presentation was alternated with the presentation of the reflex activating clicks. In the simultaneous condition, the probe tone and the clicks were presented simultaneously. Binaural summation was calculated by subtracting the ARTs obtained in the simultaneous condition from the ARTs obtained in the alternated condition. Results: MANOVA on ARTs revealed no significant gender or ear effects. The ARTs were significantly lower/better in the simultaneous condition compared to the alternated condition. Conclusions: Binaural summation was 4 dB or higher in 88% of the ears and 6 dB or higher in 76% of ears. Stimulation of six out of the total 120 (0.5%) ears resulted in worse thresholds in the simultaneous condition compared with the alternating condition, suggesting binaural interference.

Acknowledgements

Preliminary results from this study were presented at various conferences as shown below:

1. Rawool, V. W. (2014). Objective evaluation of binaural summation in auditory pathways using acoustic reflex [Abstract]. American Academy of Audiology Program Now! Audiology Now!, 182. (Orlando, FL; March 28, 2014). Poster.

2. Parrill, M. & Rawool, V. W. (2015). Gender and ear effects on binaural summation measured with acoustic reflex thresholds [Abstract]. American Academy of Audiology Program Now! Audiology Now! (San Antonio, TX, March 2015). Poster.

3. Rawool, V. W. (2017). An objective measure for assessing binaural summation. Annual convention of the National Hearing Conservation Association. (San Antonio, TX, Feb 24, 2017). Podium presentation.

Declaration of interest: No potential conflict of interest was reported by the authors.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 65.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 194.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.