Unilateral spectral and temporal compression reduces binaural fusion for normal hearing listeners with cochlear implant simulations.

Unilateral spectral and temporal compression reduces binaural fusion for normal hearing listeners with cochlear implant simulations.
Hear Res. 2014 Dec 27;
Authors: Aronoff JM, Shayman C, Prasad A, Suneel D, Stelmach J
Abstract
Patients with single sided deafness have recently begun receiving cochlear implants in their deaf ear. These patients gain a significant benefit from having a cochlear implant. However, despite this benefit, they are considerably slower to develop binaural abilities such as summation compared to bilateral cochlear implant patients. This suggests that these patients have difficulty fusing electric and acoustic signals. Although this may reflect inherent differences between electric and acoustic stimulation, it may also reflect properties of the processor and fitting system, which result in spectral and temporal compression. To examine the possibility that unilateral spectral and temporal compression can adversely affect binaural fusion, this study tested normal hearing listeners' binaural fusion through the use of vocoded speech with unilateral spectral and temporal compression. The results indicate that unilateral spectral and temporal compression can hinder binaural fusion and thus may adversely affect binaural abilities in patients with single sided deafness who use a cochlear implant in their deaf ear.
PMID: 25549574 [PubMed - as supplied by publisher]

Source: Hearing Research - December 27, 2014 Category: Audiology Authors: Aronoff JM, Shayman C, Prasad A, Suneel D, Stelmach J Tags: Hear Res Source Type: research