Sound Source Localization by Hearing Preservation Patients with and Without Symmetrical Low-frequency Acoustic Hearing

Overview

Journal Audiol Neurootol

Publisher Karger

Specialties Otorhinolaryngology
Psychiatry

Date 2015 Apr 3

PMID 25832907

Citations 12

Authors

Louise H Loiselle

Michael F Dorman

William A Yost

Rene H Gifford

Affiliations

Soon will be listed here.

Abstract

The aim of this article was to study sound source localization by cochlear implant (CI) listeners with low-frequency (LF) acoustic hearing in both the operated ear and in the contralateral ear. Eight CI listeners had symmetrical LF acoustic hearing and 4 had asymmetrical LF acoustic hearing. The effects of two variables were assessed: (i) the symmetry of the LF thresholds in the two ears and (ii) the presence/absence of bilateral acoustic amplification. Stimuli consisted of low-pass, high-pass, and wideband noise bursts presented in the frontal horizontal plane. Localization accuracy was 23° of error for the symmetrical listeners and 76° of error for the asymmetrical listeners. The presence of a unilateral CI used in conjunction with bilateral LF acoustic hearing does not impair sound source localization accuracy, but amplification for acoustic hearing can be detrimental to sound source localization accuracy.

Citing Articles

Hearing Asymmetry Biases Spatial Hearing in Bimodal Cochlear-Implant Users Despite Bilateral Low-Frequency Hearing Preservation.

Sharma S, H M Mens L, F M Snik A, Van Opstal A, van Wanrooij M Trends Hear. 2023; 27:23312165221143907.

PMID: 36605011 PMC: 9829999. DOI: 10.1177/23312165221143907.

Benefits of Cochlear Implantation in Childhood Unilateral Hearing Loss (CUHL Trial).

Brown K, Dillon M, Park L Laryngoscope. 2021; 132 Suppl 6:S1-S18.

PMID: 34542181 PMC: 9293149. DOI: 10.1002/lary.29853.

Sound source localization is a multisystem process.

Yost W, Pastore M, Dorman M Acoust Sci Technol. 2021; 41(1):113-120.

PMID: 34305431 PMC: 8297655. DOI: 10.1250/ast.41.113.

Bilateral Cochlear Implants or Bimodal Hearing for Children with Bilateral Sensorineural Hearing Loss.

Gifford R Curr Otorhinolaryngol Rep. 2021; 8(4):385-394.

PMID: 33815965 PMC: 8011438. DOI: 10.1007/s40136-020-00314-6.

Sensitivity to interaural time differences and localization accuracy in cochlear implant users with combined electric-acoustic stimulation.

Kortje M, Baumann U, Stover T, Weissgerber T PLoS One. 2020; 15(10):e0241015.

PMID: 33075114 PMC: 7571672. DOI: 10.1371/journal.pone.0241015.

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