Consonant recognition as a function of the number of stimulation channels in the Hybrid short-electrode cochlear implant

Lina A J Reiss; Christopher W Turner; Sue A Karsten; Sheryl R Erenberg; Jessica Taylor; Bruce J Gantz

doi:10.1121/1.4757735

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Consonant recognition as a function of the number of stimulation channels in the Hybrid short-electrode cochlear implant

Journal article

Open access

Peer reviewed

Consonant recognition as a function of the number of stimulation channels in the Hybrid short-electrode cochlear implant

Lina A J Reiss, Christopher W Turner, Sue A Karsten, Sheryl R Erenberg, Jessica Taylor and Bruce J Gantz

The Journal of the Acoustical Society of America, Vol.132(5), pp.3406-3417

11/2012

DOI: 10.1121/1.4757735

PMCID: PMC3505213

PMID: 23145621

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Abstract

Consonant recognition was measured as a function of the number of stimulation channels for Hybrid short-electrode cochlear implant (CI) users, long-electrode CI users, and normal-hearing (NH) listeners in quiet and background noise. Short-electrode CI subjects were tested with 1-6 channels allocated to a frequency range of 1063-7938 Hz. Long-electrode CI subjects were tested with 1-6, 8, or 22 channels allocated to 188-7938 Hz, or 1-6 or 15 channels from the basal 15 electrodes allocated to 1063-7938 Hz. NH listeners were tested with simulations of each CI group/condition. Despite differences in intracochlear electrode spacing for equivalent channel conditions, all CI subject groups performed similarly at each channel condition and improved up to at least four channels in quiet and noise. All CI subject groups underperformed relative to NH subjects. These preliminary findings suggest that the limited channel benefit seen for CI users may not be due solely to increases in channel interactions as a function of electrode density. Other factors such as pre-operative patient history, location of stimulation in the base versus apex, or a limit on the number of electric channels that can be processed cognitively, may also interact with the effects of electrode contact spacing along the cochlea.

Cochlear Implants

Humans

Middle Aged

Male

Correction of Hearing Impairment - psychology

Prosthesis Design

Persons With Hearing Impairments - psychology

Case-Control Studies

Young Adult

Aged, 80 and over

Cochlear Implantation - instrumentation

Signal Processing, Computer-Assisted

Adult

Female

Acoustic Stimulation

Cochlea - physiopathology

Persons With Hearing Impairments - rehabilitation

Auditory Threshold

Speech Acoustics

Analysis of Variance

Perceptual Masking

Audiometry, Speech

Aged

Noise - adverse effects

Recognition (Psychology)

Speech Perception

Details

Title: Subtitle: Consonant recognition as a function of the number of stimulation channels in the Hybrid short-electrode cochlear implant
Creators: Lina A J Reiss - Department of Communication Sciences and Disorders, University of Iowa, Iowa City, Iowa 52242, USA. reiss@ohsu.edu
Christopher W Turner
Sue A Karsten
Sheryl R Erenberg
Jessica Taylor
Bruce J Gantz
Resource Type: Journal article
Publication Details: The Journal of the Acoustical Society of America, Vol.132(5), pp.3406-3417
DOI: 10.1121/1.4757735
PMID: 23145621
PMCID: PMC3505213
NLM abbreviation: J Acoust Soc Am
ISSN: 0001-4966
eISSN: 1520-8524
Publisher: American Institute of Physics; United States
Grant note: P50 DC000242 / NIDCD NIH HHS M01 RR000059 / NCRR NIH HHS R01DC000377 / NIDCD NIH HHS RR00059 / NCRR NIH HHS 2P50 DC00242 / NIDCD NIH HHS R01 DC000377 / NIDCD NIH HHS
Language: English
Date published: 11/2012
Academic Unit: Communication Sciences and Disorders; Neurosurgery; Otolaryngology
Record Identifier: 9984007181902771

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