Speech Understanding by Cochlear-Implant Patients with Different Left- and Right-Ear Electrode Arrays

@article{Dorman2004SpeechUB,
  title={Speech Understanding by Cochlear-Implant Patients with Different Left- and Right-Ear Electrode Arrays},
  author={Michael F. Dorman and Lisa Dahlstrom},
  journal={Ear and Hearing},
  year={2004},
  volume={25},
  pages={191-194}
}
Electrode-pitch rankings and monaural and binaural speech perception scores were obtained from two patients fit with a Med El CIS-Link processor and Ineraid electrode array in one ear and a Clarion processor and Hi-Focus electrode array in the other ear. The results of the electrode-ranking task indicated that current from the Hi-Focus electrodes extended more apically than current from the Ineraid array, i.e., the two most apical Hi-Focus electrodes were ranked lower in pitch than the most… 
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21 Citations
Highly Influential Citations
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21 Citations

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Citation Type

Speech Perception and Sound Localization by Adults with Bilateral Cochlear Implants
TLDR
This article focuses on hearing and speech understanding and suggests that improvements in performance combine to reduce the stress that is associated with listening via electrical stimulation and thereby improve hearing-related quality of life.
Speech Perception and Localization With Adults With Bilateral Sequential Cochlear Implants
TLDR
It is concluded that sequential implants can be beneficial even after many years of monaural use and even with very different cochlear implants.
The Right Information May Matter More Than Frequency-Place Alignment: Simulations of Frequency-Aligned and Upward Shifting Cochlear Implant Processors for a Shallow Electrode Array Insertion
TLDR
It is concluded that a speech processor should represent information from important frequency regions below 1 kHz and that the possible cost of frequency misalignment can be significantly reduced with listening experience.
Effects of upper-frequency boundary and spectral warping on speech intelligibility in electrical stimulation.
TLDR
Improvements were found for the unwarped and frequency-expanded conditions, but not for the compressed condition, which has implications for new CI processing strategies, such as the inclusion of spectral localization cues.
Multicenter U.S. Bilateral MED-EL Cochlear Implantation Study: Speech Perception over the First Year of Use
TLDR
These results support a growing consensus that bilateral implantation provides functional benefits beyond those of unilateral implantation, and suggest that some aspects of binaural processing continue to develop up to 1 yr after implantation.
The contribution of a frequency-compression hearing aid to contralateral cochlear implant performance.
TLDR
The results suggest that, for the subjects in this study, frequency compression is not a better bimodal option than conventional amplification and speech perception may be negatively influenced by frequency compression because formant frequencies are too severely compressed and can no longer be distinguished.
Resistance to learning binaurally mismatched frequency-to-place maps: implications for bilateral stimulation with cochlear implants.
TLDR
Frequency-place map alignment may be of importance when optimizing bilateral devices of the type studied here, as listeners can adapt to upward-shifted speech information presented together with contralateral unshifted information.
Transitioning from bimodal to bilateral cochlear implant listening: speech recognition and localization in four individuals.
TLDR
There was a strong preference for CI&CI for all participants, and the variability in speech recognition and localization suggests that performance under these stimulus conditions is individualized.
Restoring hearing symmetry with two cochlear implants or one cochlear implant and a contralateral hearing aid.
TLDR
Bilateral stimulation of the auditory system through a CI and contralateral HA or two CIs is beneficial and should become standard clinical practice, and the data overall demonstrate that bilateral CI recipients, traditional bimodal recipients, and nontraditional bimoda recipients experience substantial binaural hearing advantages.
Simultaneous Bilateral Cochlear Implantation in Adults: A Multicenter Clinical Study
TLDR
Findings with a large patient group are in agreement with previous reports on smaller groups, showing that, overall, bilateral implantation offers the majority of patients advantages when listening in simulated adverse conditions.
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