Open-set speech perception in adult cochlear implant users with ossified cochleae

Sixteen experienced cochlear implant patients with a wide range of speechperception abilities received the SPEAK processing strategy in the Nucleus Spectra-22 cochlear implant. Speech perception was assessed in quiet and in noise with SPEAK and with the patients' previous strategies (for most, Multipeak) at the study onset, as well as after using SPEAK for 6 months. Comparisons were made within and across the two test sessions to elucidate possible learning effects. Patients were also asked to rate the strategies on seven speech recognition and sound quality scales. After 6 months' experience with SPEAK, patients showed significantly improved mean performance on a range of speech recognition measures in quiet and noise. When mean subjective ratings were compared over time there were no significant differences noted between strategies. However, many individuals rated the SPEAK strategy better for two or more of the seven subjective measures. Ratings for "appreciation of music" and "quality of my own voice" in particular were generally higher for SPEAK. Improvements were realized by patients with a wide range of speech perception abilities, including those with little or no open-set speech recognition.

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Results for Chinese and English in a Multichannel Cochlear Implant Patient

Annals of Otology Rhinology & Laryngology ◽

10.1177/00034894870960s167 ◽

1987 ◽

Vol 96 (1_suppl) ◽

pp. 126-127 ◽

Cited By ~ 15

Author(s):

S. A. Xu ◽

R. C. Dowell ◽

G. M. Clark

Keyword(s):

Hearing Loss ◽

Speech Perception ◽

Cochlear Implant ◽

Chinese Patient ◽

Cochlear Prosthesis ◽

Word Test ◽

Open Set ◽

Chinese And English ◽

Speech Tracking

A multichannel cochlear prosthesis was implanted in a Chinese patient who suffered from profound sensory hearing loss. The preoperative Minimal Auditory Capabilities (MAC) battery tests in English, as well as an open set bisyllable word test, an open set sentence test, and speech tracking in Chinese indicated significant improvement of speech perception for both English and Chinese after the operation. Substantial understanding of running speech was possible in both languages without the help of lipreading.

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Performance Over Time of Congenitally Deaf and Postlingually Deafened Children Using a Multichannel Cochlear Implant

Journal of Speech Language and Hearing Research ◽

10.1044/jshr.3504.913 ◽

1992 ◽

Vol 35 (4) ◽

pp. 913-920 ◽

Cited By ~ 78

Author(s):

Holly Fryauf-Bertschy ◽

Richard S. Tyler ◽

Danielle M. Kelsay ◽

Bruce J. Gantz

Keyword(s):

Speech Perception ◽

Word Recognition ◽

Cochlear Implant ◽

Deaf Children ◽

Closed Set ◽

Open Set ◽

Northwestern University ◽

Identification Test ◽

Improved Performance ◽

Over Time

The speech perception performance of 10 congenitally deaf and 3 postlingually deafened children who received the Cochlear Corporation multichannel cochlear implant was examined and compared. The children were tested preimplant and at 6-month intervals up to 2 years using the Monosyllable-Trochee-Spondee test (MTS), the Word Intelligibility by Picture Identification test (WIPI), and Phonetically Balanced Kindergarten (PB-K) or Northwestern University List 6 (NU-6) word lists. The postlingually deafened children exhibited significantly improved performance on open- and closed-set tests of word recognition after 6 months of implant use, a pattern similar to that of postlingually deafened adult implant users. In contrast, the congenitally deaf children did not exhibit measurably improved performance on speech perception tests until after 12 months or more of implant use. With as much as 18–24 months of use, however, some congenitally deaf children demonstrated limited open-set word recognition.

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Performance of Cochlear Implant Patients as a Function of Time

Journal of Speech Language and Hearing Research ◽

10.1044/jshr.3303.511 ◽

1990 ◽

Vol 33 (3) ◽

pp. 511-519 ◽

Cited By ~ 30

Author(s):

Lynn G. Spivak ◽

Susan B. Waltzman

Keyword(s):

Speech Recognition ◽

Speech Perception ◽

Cochlear Implant ◽

Hearing Aids ◽

Prognostic Indicator ◽

Processing Scheme ◽

Open Set ◽

Time Period ◽

Recognition Ability ◽

Over Time

The speech perception abilities of 15 patients were measured preoperatively using hearing aids and postoperatively using the Nucleus 22-channel cochlear implant over a period of 1, 2, or 3 years. Analysis of mean data revealed that, although the greatest amount of improvement in speech perception scores occurred between the preoperative and 3-month poststimulation evaluation, there was also significant improvement in perception of segmental features and open-set speech recognition over the 3-year time period. When individual patient data were examined, however, it was clear that these improvements were due, in large part, to the performance of a subset of patients who had measurable open-set speech recognition abilities at the time of their 3-month, poststimulation evaluation. Subjects who used the processing scheme that included coding of F1 showed significantly more improvement over time than subjects who used the original FOF2 processing scheme exclusively. It was concluded that open-set speech recognition ability at 3 months is an important prognostic indicator of continued improvement in speech perception abilities over time.

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Speech Perception Outcomes in Older Children Who Use Multichannel Cochlear Implants: Older is Not Always Poorer

Annals of Otology Rhinology & Laryngology ◽

10.1177/00034894021110s520 ◽

2002 ◽

Vol 111 (5_suppl) ◽

pp. 97-101 ◽

Cited By ~ 34

Author(s):

Richard C. Dowell ◽

Elizabeth Winton ◽

Shani J. Dettman ◽

Elizabeth J. Barker ◽

Katie Hill ◽

...

Keyword(s):

Hearing Loss ◽

Speech Perception ◽

Cochlear Implant ◽

Linear Regression Analysis ◽

Informed Choice ◽

Multiple Linear Regression Analysis ◽

Older Children ◽

Profound Hearing Loss ◽

Open Set ◽

The Mean

Speech perception outcomes for early-deafened children who undergo implantation as teenagers or young adults are generally reported to be poorer than results for young children. It is important to provide appropriate expectations when counseling adolescents and their families to help them make an informed choice regarding cochlear implant surgery. The considerable variation of results in this group makes this process more difficult. This study considered a number of factors in a group of 25 children who underwent implantation in Melbourne between the ages of 8 and 18 years. Each subject completed open-set speech perception testing with Bamford-Kowal-Bench sentences before and after implantation and preoperative language testing with the Peabody Picture Vocabulary Test. Data were collected regarding the type of hearing loss, age at implantation, age at hearing aid fitting, audiometric details, and preoperative and postoperative communication mode. Results were submitted to a stepwise multiple linear regression analysis with postoperative open-set sentence scores as the dependent variables. The analysis suggested that 3 factors have a significant predictive value for speech perception after implantation: preoperative open-set sentence score, duration of profound hearing loss, and equivalent language age. These 3 factors accounted for 66% of the variance in this group. The results of this study suggest that children who have useful speech perception before implantation, and higher age-equivalent scores on language measures, would be expected to do well with a cochlear implant. Consistent with other studies, a shorter duration of profound hearing loss is also advantageous. The mean sentence score for this group, 47%, was not significantly different from the mean result across all children in the Melbourne program.

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Effects of in vivo repositioning of slim modiolar electrodes on electrical thresholds and speech perception

Scientific Reports ◽

10.1038/s41598-021-94668-6 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Sang-Yeon Lee ◽

Young Seok Kim ◽

Hyung Dong Jo ◽

Yoonjoong Kim ◽

Marge Carandang ◽

...

Keyword(s):

Speech Perception ◽

Cochlear Implant ◽

Functional Outcomes ◽

Cadaveric Study ◽

Scala Tympani ◽

Insertion Depth ◽

Sentence Recognition ◽

Open Set

AbstractThe slim modiolar electrode has been reported to ensure better modiolar proximity than previous conventional perimodiolar electrodes and consistently high scala tympani localization. Nonetheless, variability in modiolar proximity exists even among slim modiolar electrodes, still leaving room for further improvement of modiolar proximity, which may positively affect functional outcomes. Given this, the pull-back maneuver was reported to increase the modiolar proximity of slim modiolar electrodes in a cadaveric study, but in vivo repositioning effects remain to be established. Here we identified that the pull-back maneuver led to better modiolar proximity than conventional insertion while maintaining a similar angular insertion depth. Notably, the reduced electrode-modiolus distance from the pull-back maneuver was associated with significantly lower impedances across electrodes postoperatively as well as reduced intraoperative electrophysiological thresholds than conventional insertion. Among adult cochlear implant recipients, this maneuver resulted in significantly better sentence recognition scores at three months postoperatively when compared to those with a conventional insertion; however, this benefit was not observed at later intervals. Collectively, slim modiolar electrodes with the pull-back maneuver further enhance the modiolar proximity, possibly leading to better open-set sentence recognition, at least in the early postoperative stage.

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Cochlear Implantation in Children with Inner Ear Malformations

Annals of Otology Rhinology & Laryngology ◽

10.1177/000348949810700607 ◽

1998 ◽

Vol 107 (6) ◽

pp. 492-500 ◽

Cited By ~ 48

Author(s):

Audie L. Woolley ◽

Rodney P. Lusk ◽

Virginia Jenison ◽

Robert S. Bahadori ◽

Barbara S. Stroer ◽

...

Keyword(s):

Speech Perception ◽

Cochlear Implant ◽

Inner Ear ◽

Cochlear Implantation ◽

Csf Leak ◽

Closed Set ◽

Inner Ear Malformations ◽

Open Set ◽

Ear Malformations ◽

Csf Leaks

We performed a case study and intervention study, with follow-up of 1 to 5 years, in 4 children with inner ear malformations who underwent implantation of a multichannel cochlear implant (Nucleus, Cochlear Corporation) at ages 3 to 12 years. Malformations included a common cavity deformity, 2 incomplete partitions, and 1 case of isolated bilateral vestibular aqueduct enlargement. One child had a single-channel implant placed at 3 years of age, and this was exchanged for a 22-channel implant at age 9. One child had her implant placed at age 4.5 years, but due to complications from a cerebrospinal fluid (CSF) leak had the initial implant removed and replaced at age 5 years during repair of the CSF leak. Intraoperative findings included a CSF leak at the time of surgery in 3 patients. One patient contracted bacterial meningitis 7 months postimplantation that was thought to be secondary to acute otitis media in the unoperated ear. Bilateral CSF leaks were noted in the middle ear by a lumbar puncture radionuclide and fluorescein dye study. Successful repair of the CSF leaks and reimplantation of the cochlear implant was carried out in this patient. Mapping and programing of the implant was found to be challenging in each of these patients. All patients demonstrated improved performance after implantation. Two patients demonstrated some open-set speech perception. One patient demonstrates improved use of temporal cues in a structured closed set. One patient has achieved no significant speech recognition at this time, but does have improved sound detection and awareness. Cochlear implantation in children with congenital inner ear abnormalities can be a successful method of rehabilitation. It should be recognized that the postoperative speech perception results may be highly variable among patients, and that intraoperative complications may occur.

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Self-Reported Listening Habits and Enjoyment of Music among Adult Cochlear Implant Recipients

Annals of Otology Rhinology & Laryngology ◽

10.1177/000348940911800506 ◽

2009 ◽

Vol 118 (5) ◽

pp. 350-355 ◽

Cited By ~ 35

Author(s):

Lela Migirov ◽

Jona Kronenberg ◽

Yael Henkin

Keyword(s):

Speech Perception ◽

Cochlear Implant ◽

Cochlear Implantation ◽

Speech Coding ◽

Musical Instrument ◽

Open Set ◽

Coding Strategy ◽

Listening Habits ◽

Musical Activities

Objectives: We sought to assess the associations between self-reported listening habits and enjoyment of music, and the following variables: Age at implantation, gender, prelingual versus postlingual deafness, duration of deafness, duration of cochlear implant (CI) use, type of CI, speech coding strategy, and speech perception abilities. Methods: A questionnaire on listening habits and enjoyment of music before the onset of deafness and after implantation was sent to 85 adult CI recipients who had been using the devices for at least 6 months. Results: Of the 53 responders, 39 (73.6%) listened to music after implantation. Listening to music was not significantly related to age at implantation, gender, duration of deafness, duration of CI use, type of CI device, speech coding strategy, or open-set speech perception abilities. The 14 nonlisteners were postlingually deafened. The ratings of enjoyment were the same for 22.6% of patients, improved for 26.4%, and worse for 50.9%. Only 2 of 13 patients who played a musical instrument and 14 of 24 patients who sang before the onset of deafness resumed their musical activities. Conclusions: Despite the decline in listening habits and in the enjoyment of music after cochlear implantation, most patients do listen to music. The changes in listening habits and enjoyment were not related to the selected background variables.

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

The Scientific World JOURNAL ◽

10.1100/tsw.2010.28 ◽

2010 ◽

Vol 10 ◽

pp. 329-339 ◽

Cited By ~ 7

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.

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