scholarly journals Mechanisms of Localization and Speech Perception with Colocated and Spatially Separated Noise and Speech Maskers Under Single-Sided Deafness with a Cochlear Implant

2019 ◽  
Vol 40 (6) ◽  
pp. 1293-1306 ◽  
Author(s):  
Coral Dirks ◽  
Peggy B. Nelson ◽  
Douglas P. Sladen ◽  
Andrew J. Oxenham
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Single Sided Deafness

scholarly journals Bone-anchored hearing system, contralateral routing of signals hearing aid or cochlear implant: what is best in single-sided deafness?

2021 ◽  
Author(s):  
Till F. Jakob ◽  
Iva Speck ◽  
Ann-Kathrin Rauch ◽  
Frederike Hassepass ◽  
Manuel C. Ketterer ◽  
...  
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Hearing Aids ◽  
Long Term Results ◽  
Speech Perception In Noise ◽  
Sound Localisation ◽  
Therapy Option ◽  
Single Sided Deafness ◽  
Objective Hearing Tests

Abstract Purpose The aim of the study was to compare long-term results after 1 year in patients with single-sided deafness (SSD) who were fitted with different hearing aids. The participants tested contralateral routing of signals (CROS) hearing aids and bone-anchored hearing systems (BAHS). They were also informed about the possibility of a cochlear implant (CI) and chose one of the three devices. We also investigated which factors influenced the choice of device. Methods Prospective study with 89 SSD participants who were divided into three groups by choosing BAHS, CROS, or CI. All participants received test batteries with both objective hearing tests (speech perception in noise and sound localisation) and subjective questionnaires. Results 16 participants opted for BAHS-, 13 for CROS- and 30 for CI-treatment. The greater the subjective impairment caused by SSD, the more likely patients were to opt for surgical treatment (BAHS or CI). The best results in terms of speech perception in noise (especially when sound reaches the deaf ear and noise the hearing ear), sound localization, and subjective results were achieved with CI. Conclusion The best results regarding the therapy of SSD are achieved with a CI, followed by BAHS. This was evident both in objective tests and in the subjective questionnaires. Nevertheless, an individual decision is required in each case as to which SSD therapy option is best for the patient. Above all, the patient's subjective impairment and expectations should be included in the decision-making process.

Impact of Reverberation on Speech Perception and Sound Localization Accuracy in Cochlear Implant Users With Single-Sided Deafness

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Monika Körtje ◽  
Anja Eichenauer ◽  
Timo Stöver ◽  
Uwe Baumann ◽  
Tobias Weissgerber
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Sound Localization ◽  
Localization Accuracy ◽  
Single Sided Deafness

scholarly journals The impact of cochlear implant microphone settings on the binaural hearing of experienced cochlear implant users with single-sided deafness

2020 ◽  
Author(s):  
Anja Kurz ◽  
Maren Zanzinger ◽  
Rudolf Hagen ◽  
Kristen Rak
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Binaural Hearing ◽  
Sound Quality ◽  
Noise Sources ◽  
Shadow Effect ◽  
Spatial Release ◽  
Release From Masking ◽  
Single Sided Deafness ◽  
The Impact

Abstract Objective Cochlear implantation has become a well-accepted treatment option for people with single-sided deafness (SSD) and has become a clinical standard in many countries. A cochlear implant (CI) is the only device which restores binaural hearing. The effect of microphone directionality (MD) settings has been investigated in other CI indication groups, but its impact on speech perception in noise has not been established in CI users with SSD. The focus of this investigation was, therefore, to assess binaural hearing effects using different MD settings in CI users with SSD. Methods Twenty-nine experienced CI users with SSD were recruited to determine speech reception thresholds with varying target and noise sources to define binaural effects (head shadow, squelch, summation, and spatial release from masking), sound localization, and sound quality using the SSQ12 and HISQUI19 questionnaires. Outcome measures included the MD settings “natural”, “adaptive”, and “omnidirectional”. Results The 29 participants involved in the study were divided into two groups: 11 SONNET users and 18 OPUS 2/RONDO users. In both groups, a significant head shadow effect of 7.4–9.2 dB was achieved with the CI. The MD setting “adaptive” provided a significant head shadow effect of 9.2 dB, a squelch effect of 0.9 dB, and spatial release from masking of 7.6 dB in the SONNET group. No significant summation effect could be determined in either group with CI. Outcomes with the omnidirectional setting were not significantly different between groups. For both groups, localization improved significantly when the CI was activated and was best when the omnidirectional setting was used. The groups’ sound quality scores did not significantly differ. Conclusions Adaptive directional microphone settings improve speech perception and binaural hearing abilities in CI users with SSD. Binaural effect measures are valuable to quantify the benefit of CI use, especially in this indication group.

scholarly journals Acoustic Hearing Can Interfere With Single-Sided Deafness Cochlear-Implant Speech Perception

2019 ◽  
Vol 41 (4) ◽  
pp. 747-761 ◽  
Author(s):  
Joshua G. W. Bernstein ◽  
Olga A. Stakhovskaya ◽  
Kenneth Kragh Jensen ◽  
Matthew J. Goupell
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Acoustic Hearing ◽  
Single Sided Deafness

scholarly journals Logatome Discrimination in Cochlear Implant Users: Subjective Tests Compared to the Mismatch Negativity

2010 ◽  
Vol 10 ◽  
pp. 329-339 ◽  
Author(s):  
Torsten Rahne ◽  
Michael Ziese ◽  
Dorothea Rostalski ◽  
Roland Mühler
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Mismatch Negativity ◽  
Speech Intelligibility ◽  
Event Related Potentials ◽  
Normal Hearing ◽  
Discrimination Test ◽  
Speech Database ◽  
Automated Speech Recognition ◽  
Related Potentials

This paper describes a logatome discrimination test for the assessment of speech perception in cochlear implant users (CI users), based on a multilingual speech database, the Oldenburg Logatome Corpus, which was originally recorded for the comparison of human and automated speech recognition. The logatome discrimination task is based on the presentation of 100 logatome pairs (i.e., nonsense syllables) with balanced representations of alternating “vowel-replacement” and “consonant-replacement” paradigms in order to assess phoneme confusions. Thirteen adult normal hearing listeners and eight adult CI users, including both good and poor performers, were included in the study and completed the test after their speech intelligibility abilities were evaluated with an established sentence test in noise. Furthermore, the discrimination abilities were measured electrophysiologically by recording the mismatch negativity (MMN) as a component of auditory event-related potentials. The results show a clear MMN response only for normal hearing listeners and CI users with good performance, correlating with their logatome discrimination abilities. Higher discrimination scores for vowel-replacement paradigms than for the consonant-replacement paradigms were found. We conclude that the logatome discrimination test is well suited to monitor the speech perception skills of CI users. Due to the large number of available spoken logatome items, the Oldenburg Logatome Corpus appears to provide a useful and powerful basis for further development of speech perception tests for CI users.

scholarly journals Meta-Analysis—Correlation between Spiral Ganglion Cell Counts and Speech Perception with a Cochlear Implant

2021 ◽  
Vol 11 (2) ◽  
pp. 220-226
Author(s):  
Yew-Song Cheng ◽  
Mario A. Svirsky
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Ganglion Cells ◽  
Meta Analysis ◽  
Spiral Ganglion ◽  
Spiral Ganglion Cell ◽  
Cell Counts ◽  
Temporal Bones ◽  
The Relationship ◽  
Existing Data

The presence of spiral ganglion cells (SGCs) is widely accepted to be a prerequisite for successful speech perception with a cochlear implant (CI), because SGCs provide the only known conduit between the implant electrode and the central auditory system. By extension, it has been hypothesized that the number of SGCs might be an important factor in CI outcomes. An impressive body of work has been published on findings from the laborious process of collecting temporal bones from CI users and counting the number of SGCs to correlate those numbers with speech perception scores, but the findings thus far have been conflicting. We performed a meta-analysis of all published studies with the hope that combining existing data may help us reach a more definitive conclusion about the relationship between SGC count and speech perception scores in adults.

Psychophysical and speech perception studies: A case report on a binaural cochlear implant subject

1993 ◽  
Vol 94 (6) ◽  
pp. 3178-3189 ◽  
Author(s):  
R. J. M. van Hoesel ◽  
Y. C. Tong ◽  
R. D. Hollow ◽  
G. M. Clark
Keyword(s):  
Case Report ◽  
Speech Perception ◽  
Cochlear Implant

Reduction in High-Frequency Hearing Aid Gain Can Improve Performance in Patients With Contralateral Cochlear Implant: A Pilot Study

2015 ◽  
Vol 24 (4) ◽  
pp. 462-468 ◽  
Author(s):  
Jessica J. Messersmith ◽  
Lindsey E. Jorgensen ◽  
Jessica A. Hagg
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Chart Review ◽  
Hearing Aid ◽  
Retrospective Chart Review ◽  
Improve Performance ◽  
Bimodal Condition ◽  
Overall Performance ◽  
Age Range ◽  
Clinic Population

Purpose The purpose of this study was to determine whether an alternate fitting strategy, specifically adjustment to gains in a hearing aid (HA), would improve performance in patients who experienced poorer performance in the bimodal condition when the HA was fit to traditional targets. Method This study was a retrospective chart review from a local clinic population seen during a 6-month period. Participants included 6 users of bimodal stimulation. Two performed poorer in the cochlear implant (CI) + HA condition than in the CI-only condition. One individual performed higher in the bimodal condition, but the overall performance was low. Three age range–matched users whose performance increased when the HA was used in conjunction with a CI were also included. The HA gain was reduced beyond 2000 Hz. Speech perception scores were obtained pre- and postmodification to the HA fitting. Results All listeners whose HA was programmed using the modified approach demonstrated improved speech perception scores with the modified HA fit in the bimodal condition when compared with the traditional HA fit in the bimodal condition. Conclusion Modifications to gains above 2000 Hz in the HA may improve performance for bimodal listeners who perform more poorly in the bimodal condition when the HA is fit to traditional targets.

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