Hearing preservation and speech perception outcomes with electric-acoustic stimulation after 12 months of listening experience

2013 ◽  
pp. n/a-n/a ◽  
Author(s):  
Oliver F. Adunka ◽  
Margaret T. Dillon ◽  
Marcia C. Adunka ◽  
English R. King ◽  
Harold C. Pillsbury ◽  
...  
Keyword(s):  
Speech Perception ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Electric Acoustic Stimulation ◽  
Listening Experience

Influence of Test Condition on Speech Perception With Electric-Acoustic Stimulation

2015 ◽  
Vol 24 (4) ◽  
pp. 520-528 ◽  
Author(s):  
Margaret T. Dillon ◽  
Emily Buss ◽  
Oliver F. Adunka ◽  
Craig A. Buchman ◽  
Harold C. Pillsbury
Keyword(s):  
New York ◽  
Speech Perception ◽  
Acoustic Stimulation ◽  
Electric Acoustic Stimulation ◽  
Listening Experience ◽  
Improved Performance ◽  
Frequency Map ◽  
And Performance ◽  
Better Than

Purpose The goal of this work was to better understand speech perception for cochlear implant (CI) users with bilateral residual hearing, including consideration of effects related to listening conditions and test measures. Of interest was the role of acoustic hearing for speech perception in a complex background, the role of listening experience for CI-alone conditions, and whether performance with electric-acoustic stimulation (EAS) was improved by a contralateral hearing aid (HA). Method Eleven subjects provided data on Consonant-Nucleus-Consonant (CNC; Peterson & Lehiste, 1962) words in quiet, City University of New York (CUNY; Boothroyd, Hanin, & Hnath, 1985) sentences in steady noise, and Bamford-Kowal-Bench (Bench, Kowal, & Bamford, 1979) sentences in multitalker babble. Listening conditions included: CI with a full-frequency map, CI with a truncated-frequency map, EAS, and EAS+HA (EAS plus contralateral HA). Sounds were presented at 0° azimuth. Results For CNC words and CUNY sentences, performance was better with the truncated-frequency than the full-frequency map, and performance with EAS was better than for either CI-alone condition. For Bench-Kowal-Bamford sentences, EAS+HA was better than EAS. Conclusions As demonstrated previously, performance was better in the EAS condition than either CI-alone condition. Better performance in the truncated-frequency than full-frequency CI-alone condition suggests that listening experience may be important. A contralateral HA improved performance over unilateral EAS under some conditions.

Effects of Hearing Aid Settings for Electric-Acoustic Stimulation

2014 ◽  
Vol 25 (02) ◽  
pp. 133-140 ◽  
Author(s):  
Margaret T. Dillon ◽  
Emily Buss ◽  
Harold C. Pillsbury ◽  
Oliver F. Adunka ◽  
Craig A. Buchman ◽  
...  
Keyword(s):  
Speech Perception ◽  
Signal To Noise Ratio ◽  
Hearing Aid ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Speech Processor ◽  
Listening Condition ◽  
Nonlinear Fitting ◽  
Fitting Procedure ◽  
Electric Acoustic Stimulation

Background: Cochlear implant (CI) recipients with postoperative hearing preservation may utilize an ipsilateral bimodal listening condition known as electric-acoustic stimulation (EAS). Studies on EAS have reported significant improvements in speech perception abilities over CI-alone listening conditions. Adjustments to the hearing aid (HA) settings to match prescription targets routinely used in the programming of conventional amplification may provide additional gains in speech perception abilities. Purpose: Investigate the difference in users’ speech perception scores when listening with the recommended HA settings for EAS patients versus HA settings adjusted to match National Acoustic Laboratories’ nonlinear fitting procedure version 1 (NAL-NL1) targets. Research Design: Prospective analysis of the influence of HA settings. Study Sample: Nine EAS recipients with greater than 12 mo of listening experience with the DUET speech processor. Intervention: Subjects were tested in the EAS listening condition with two different HA setting configurations. Speech perception materials included consonant-nucleus-consonant (CNC) words in quiet, AzBio sentences in 10-talker speech babble at a signal-to-noise ratio (SNR) of +10, and the Bamford-Kowal-Bench sentences in noise (BKB-SIN) test. Data Collection and Analysis: The speech perception performance on each test measure was compared between the two HA configurations. Results: Subjects experienced a significant improvement in speech perception abilities with the HA settings adjusted to match NAL-NL1 targets over the recommended HA settings. Conclusions: EAS subjects have been shown to experience improvements in speech perception abilities when listening to ipsilateral combined stimulation. This population’s abilities may be underestimated with current HA settings. Tailoring the HA output to the patient’s individual hearing loss offers improved outcomes on speech perception measures.

scholarly journals Preservation of residual hearing after cochlear implant surgery with slim modiolar electrode

2019 ◽  
Vol 277 (2) ◽  
pp. 367-375 ◽  
Author(s):  
Matti Iso-Mustajärvi ◽  
Sini Sipari ◽  
Heikki Löppönen ◽  
Aarno Dietz
Keyword(s):  
Low Frequency ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Residual Hearing ◽  
Insertion Depth ◽  
Cochlear Implant Surgery ◽  
Computed Tomography Scans ◽  
Electric Acoustic Stimulation ◽  
Speech Recognition In Noise

Abstract Purpose To evaluate the insertion results and hearing preservation of a novel slim modiolar electrode (SME) in patients with residual hearing. Methods We retrospectively collected the data from the medical files of 17 patients (18 ears) implanted with a SME. All patients had functional low frequency hearing (PTA (0.125–0.5 kHz) ≤ 80 dB HL). The insertion results were re-examined from the postoperative cone-beam computed tomography scans. Postoperative thresholds were obtained at the time of switch-on of the sound processors (mean 43 days) and at latest follow-up (mean 582 days). The speech recognition in noise was measured with the Finnish matrix sentence test preoperatively and at follow-up. Results The mean insertion depth angle (IDA) was 395°. Neither scala dislocations nor tip fold over were detected. There were no total hearing losses. Functional low-frequency hearing was preserved in 15/18 (83%) ears at switch-on and in 14/17 (82%) ears at follow-up. According to HEARRING classification, 55% (10/18) had complete HP at switch-on and 41% (7/17) still at follow-up. Thirteen patients (14 ears) were initially fitted with electric–acoustic stimulation and seven patients (8 ears) continued to use it after follow-up. Conclusions The preliminary hearing preservation results with the SME were more favorable than reported for other perimodiolar electrodes. The results show that the array may also be feasible for electro-acoustic stimulation; it is beneficial in that it provides adequate cochlear coverage for pure electrical stimulation in the event of postoperative or progressive hearing loss.

Ipsilateral Electric Acoustic Stimulation of the Auditory System: Results of Long-Term Hearing Preservation

2006 ◽  
Vol 11 (1) ◽  
pp. 49-56 ◽  
Author(s):  
Wolfgang K. Gstoettner ◽  
Silke Helbig ◽  
Nicola Maier ◽  
Jan Kiefer ◽  
Andreas Radeloff ◽  
...  
Keyword(s):  
Auditory System ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Electric Acoustic Stimulation ◽  
Stimulation Of

Impact of Electric Stimulation on Residual Hearing

2015 ◽  
Vol 26 (08) ◽  
pp. 732-740 ◽  
Author(s):  
Margaret T. Dillon ◽  
Andrea L. Bucker ◽  
Marcia C. Adunka ◽  
English R. King ◽  
Oliver F. Adunka ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Electric Stimulation ◽  
Bone Conduction ◽  
Low Frequency ◽  
Electrode Array ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
First Year ◽  
Residual Hearing ◽  
Listening Experience

Background: Candidacy criteria for cochlear implantation are expanding to include patients with substantial low-to-mid frequency hearing sensitivity. Postoperative hearing preservation has been achieved in cochlear implant recipients, though with variable outcomes. Previous investigations on postoperative hearing preservation outcomes have evaluated intraoperative procedures. There has been limited review as to whether electric stimulation influences hearing preservation. Purpose: The purpose of this analysis was to evaluate whether charge levels associated with electric stimulation influence postoperative hearing preservation within the first year of listening experience. Research Design: Retrospective analysis of unaided residual hearing and charge levels. Study Sample: Twenty-eight cochlear implant recipients with postoperative residual hearing in the operative ear and at least 12 mo of listening experience with electric-acoustic stimulation (EAS). Data Collection and Analysis: Assessment intervals included initial cochlear implant activation, initial EAS activation, and 3-, 6-, and 12-mo postinitial EAS activation. A masked low-frequency bone-conduction (BC) pure-tone average (PTA) was calculated for all participants at each assessment interval. Charge levels for each electrode were determined using the most comfortable loudness level and pulse width values. Charge levels associated with different regions of the electrode array were compared to the change in the low-frequency BC PTA between two consecutive intervals. Results: Charge levels had little to no association with the postoperative change in low-frequency BC PTA within the first year of listening experience. Conclusions: Electric charge levels do not appear to be reliably related to the subsequent loss of residual low-frequency hearing in the implanted ear within the first year of EAS listening experience.

scholarly journals The advantages of sound localization and speech perception of bilateral electric acoustic stimulation

2014 ◽  
Vol 135 (2) ◽  
pp. 147-153 ◽  
Author(s):  
Hideaki Moteki ◽  
Ryosuke Kitoh ◽  
Keita Tsukada ◽  
Satoshi Iwasaki ◽  
Shin-Ya Nishio ◽  
...  
Keyword(s):  
Speech Perception ◽  
Sound Localization ◽  
Acoustic Stimulation ◽  
Electric Acoustic Stimulation

scholarly journals Hearing preservation and clinical outcome of 32 consecutive electric acoustic stimulation (EAS) surgeries

2014 ◽  
Vol 134 (7) ◽  
pp. 717-727 ◽  
Author(s):  
Shin-Ichi Usami ◽  
Hideaki Moteki ◽  
Keita Tsukada ◽  
Maiko Miyagawa ◽  
Shin-Ya Nishio ◽  
...  
Keyword(s):  
Clinical Outcome ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Electric Acoustic Stimulation

scholarly journals Hearing Preservation in Cochlear Implant Surgery

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Priscila Carvalho Miranda ◽  
André Luiz Lopes Sampaio ◽  
Rafaela Aquino Fernandes Lopes ◽  
Alessandra Ramos Venosa ◽  
Carlos Augusto Costa Pires de Oliveira
Keyword(s):  
Cochlear Implant ◽  
Cochlear Implantation ◽  
Surgical Techniques ◽  
Low Frequency ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Electrode Design ◽  
High Frequency Region ◽  
Electric Acoustic Stimulation ◽  
New Treatment

In the past, it was thought that hearing loss patients with residual low-frequency hearing would not be good candidates for cochlear implantation since insertion was expected to induce inner ear trauma. Recent advances in electrode design and surgical techniques have made the preservation of residual low-frequency hearing achievable and desirable. The importance of preserving residual low-frequency hearing cannot be underestimated in light of the added benefit of hearing in noisy atmospheres and in music quality. The concept of electrical and acoustic stimulation involves electrically stimulating the nonfunctional, high-frequency region of the cochlea with a cochlear implant and applying a hearing aid in the low-frequency range. The principle of preserving low-frequency hearing by a “soft surgery” cochlear implantation could also be useful to the population of children who might profit from regenerative hair cell therapy in the future. Main aspects of low-frequency hearing preservation surgery are discussed in this review: its brief history, electrode design, principles and advantages of electric-acoustic stimulation, surgical technique, and further implications of this new treatment possibility for hearing impaired patients.

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