Abstract
The present study used concurrent-vowel recognition to measure integration efficiency of combined acoustic and electric stimulation in eight actual cochlear-implant subjects who had normal or residual low-frequency acoustic hearing contralaterally. Although these subjects could recognize single vowels (>90% correct) with either electric or combined stimulation, their performance degraded significantly in concurrent-vowel recognition. Compared with previous simulation results using normal-hearing subjects, the present subjects produced similar performance with acoustic or electric stimulation alone, but significantly lower performance with combined stimulation. A probabilistic model found reduced integration efficiency between acoustic and electric stimulation in the present subjects. The integration efficiency was negatively correlated with residual acoustic hearing in the non-implanted ear and duration of deafness in the implanted ear. The present result suggests a central origin of the integration deficit and that this integration be evaluated and considered in future management of hearing impairment and design of auditory prostheses.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
