Cochlear Implants in Children, Adolescents, and Prelinguistically Deafened Adults

1992 ◽  
Vol 35 (2) ◽  
pp. 401-417 ◽  
Author(s):  
Pam W. Dawson ◽  
Peter J. Blamey ◽  
Louise C. Rowland ◽  
Shani J. Dettman ◽  
Graeme M. Clark ◽  
...  

A group of 10 children, adolescents, and prelinguistically deafened adults were implanted with the 22-electrode cochlear implant (Cochlear Pty Ltd) at the University of Melbourne Cochlear Implant Clinic and have used the prosthesis for periods from 12 to 65 months. Postoperative performance on the majority of closed-set speech perception tests was significantly greater than chance, and significantly better than preoperative performance for all of the patients. Five of the children have achieved substantial scores on open-set speech tests using hearing without lipreading. Phoneme scores in monosyllabic words ranged from 30% to 72%; word scores in sentences ranged from 26% to 74%. Four of these 5 children were implanted during preadolescence (aged 5:5 to 10:2 years) and the fifth, who had a progressive loss, was implanted during adolescence (aged 14:8 years). The duration of profound deafness before implantation varied from 2 to 8 years. Improvements were also noted over postoperative data collection times for the younger children. The remaining 5 patients who did not demonstrate open-set recognition were implanted after a longer duration of profound deafness (aged 13:11 to 20:1 years). The results are discussed with reference to variables that may affect implant performance, such as age at onset of loss, duration of profound loss, age at implantation, and duration of implantation. They are compared with results for similar groups of children using hearing aids and cochlear implants.

1997 ◽  
Vol 111 (11) ◽  
pp. 1008-1017 ◽  
Author(s):  
Mohammad Jamal A. Makhdoum ◽  
Ad F. M. Snik ◽  
Paul van den Broek

AbstractThe field of cochlear implantation is developing rapidly. In subjects with bilateral profound deafness who gain no benefit from conventional hearing aids the aim of cochlear implantation is to provide a means for them to receive auditory sensations. Throughout the world, most cochlear implant centres are still continuing their research efforts to improve the results with this technique. Although it is still difficult to predict how an individual will perform with a cochlear implant, the success of cochlear implantation can no longer be denied. In this paper, we review some recent papers and reports, and the results of the various Nijmegen cochlear implant studies. Data about subject selection, examinations, surgery and the outcome are discussed. Our results were in good agreement with those of other authors. It can be concluded once again that cochlear implantation is an effective treatment for postlingually deaf adults and children, and for prelingually (congenital or acquired) deaf children with profound bilateral sensorineural deafness.


1993 ◽  
Vol 102 (6) ◽  
pp. 433-437 ◽  
Author(s):  
Mark A. Frattali ◽  
Robert T. Sataloff

Profound deafness has received increasing attention in recent years, largely because of the availability of cochlear implants. Consequently, it is especially important for otolaryngologists to remember that a “blank” audiogram does not necessarily mean total or even profound deafness. Patients with far-advanced otosclerosis may have no measurable hearing with routine audiometric testing even in the presence of serviceable sensorineural hearing. Review of nine patients (10 ears) who underwent stapedectomy from 1980 to 1987 reveals that seven of the nine (78%), who had been unable to use a hearing aid preoperatively, obtained serviceable hearing with hearing aids following surgery. Otolaryngologists should depend on a good history and tuning fork examination to avoid being misled by the audiogram, and should not hesitate to offer stapes surgery to patients with far-advanced otosclerosis.


1996 ◽  
Vol 39 (3) ◽  
pp. 604-610 ◽  
Author(s):  
Nancy Tye-Murray ◽  
Linda Spencer ◽  
Elizabeth Gilbert Bedia ◽  
George Woodworth

Twenty children who have worn a Cochlear Corporation cochlear implant for an average of 33.6 months participated in a device-on/off experiment. They spoke 14 monosyllabic words three times each after having not worn their cochlear implant speech processors for several hours. They then spoke the same speech sample again with their cochlear implants turned on. The utterances were phonetically transcribed by speech-language pathologists. On average, no difference between speaking conditions on indices of vowel height, vowel place, initial consonant place, initial consonant voicing, or final consonant voicing was found. Comparisons based on a narrow transcription of the speech samples revealed no difference between the two speaking conditions. Children who were more intelligible were no more likely to show a degradation in their speech production in the device-off condition than children who were less intelligible. In the device-on condition, children sometimes nasalized their vowels and inappropriately aspirated their consonants. Their tendency to nasalize vowels and aspirate initial consonants might reflect an attempt to increase proprioceptive feedback, which would provide them with a greater awareness of their speaking behavior.


2004 ◽  
Vol 5 (sup1) ◽  
pp. 128-130
Author(s):  
Min-Jung Heo ◽  
Lee-Suk Kim ◽  
Woo-Yong Bae ◽  
Young-Deok Park

2016 ◽  
Vol 21 (6) ◽  
pp. 383-390 ◽  
Author(s):  
Rebecca L. Heywood ◽  
Deborah A. Vickers ◽  
Francesca Pinto ◽  
George Fereos ◽  
Azhar Shaida

The objectives of this study were to assess: (i) patient expectations met as a measure of outcome in early-deafened, late-implanted (non-traditional) cochlear implant recipients and (ii) pre-implantation predictive factors for postoperative speech perception. The notes of 13 recipients were retrospectively reviewed. The mean age at onset of profound deafness was 1.5 years (range 0-6). The mean age at implantation was 37 years (range 22-51 years). Patient expectations were assessed pre-operatively and 1 year after implantation. They were met or exceeded in 129/140 (92%) domains overall. A higher Speech Intelligibility Rating and audiovisual City University of New York sentence score before implantation were found to be positive predictive factors for improved speech discrimination after cochlear implantation.


1999 ◽  
Vol 106 (4) ◽  
pp. 2177-2177 ◽  
Author(s):  
Ted A. Meyer ◽  
Mario A. Svirsky ◽  
Stefan Frisch ◽  
Adam R. Kaiser ◽  
David B. Pisoni ◽  
...  

1989 ◽  
Vol 32 (4) ◽  
pp. 887-911 ◽  
Author(s):  
Richard S. Tyler ◽  
Brian C. J. Moore ◽  
Francis K. Kuk

The main purpose of this study was to provide an independent corroboration of open-set word recognition in some of the better cochlear-implant patients. These included the Chorimac, Nucleus (one group from the U.S.A. and one group from Hannover, Germany), Symbion, Duren/Cologne and 3M/Vienna implants. Three experiments are reported: (1) word recognition in word lists and in sentences; (2) environmental sound perception, and (3) gap detection. On word recognition, the scores of 6 Chorimac patients averaged 2.5% words and 0.7% words in sentences correct in the French tests. In the German tests, the scores averaged 17% words and 10% words in sentences for 10 Duren/Cologne patients, 15% words and 16% words in sentences for 9 3M/Vienna patients, and 10% words and 16% words in sentences (3% to 26%) for 10 Nucleus/Hannover patients. In the English tests, the scores averaged 11% words and 29.6% words in sentences for l0 Nucleus-U.S.A. patients, and 13.7% words and 35.7% words in sentences for the 9 Symbion patients. The ability to recognize recorded environmental sounds was measured with a closed set of 18 sounds. Performance averaged 23% correct for Chorimac patients, 41% correct for 3M/Vienna patients, 44% correct for Nucleus/Hannover patients, 21% correct for Duren/Cologne patients, 58% correct for Nucleus/U.S.A. patients, and 83% correct for Symbion patients. A multidimensional scaling analysis suggested that patients were, in part, utilizing information about the envelope and about the periodic/aperiodic nature of some of the sounds. Gap detection thresholds with a one-octave wide noise centered at 500 Hz varied widely among patients. Typically, patients with gap thresholds less than 40 ms showed a wide range of performance on speech perception tasks, whereas patients with gap-detection thresholds greater than 40 ms showed poor word recognition skills.


2004 ◽  
Vol 5 (S1) ◽  
pp. 128-130
Author(s):  
Min-Jung Heo ◽  
Lee-Suk Kim ◽  
Woo-Yong Bae ◽  
Young-Deok Park

1980 ◽  
Vol 45 (2) ◽  
pp. 223-238 ◽  
Author(s):  
Richard H. Wilson ◽  
June K. Antablin

The Picture Identification Task was developed to estimate the word-recognition performance of nonverbal adults. Four lists of 50 monosyllabic words each were assembled and recorded. Each test word and three rhyming alternatives were illustrated and photographed in a quadrant arrangement. The task of the patient was to point to the picture representing the recorded word that was presented through the earphone. In the first experiment with young adults, no significant differences were found between the Picture Identification Task and the Northwestern University Auditory Test No. 6 materials in an open-set response paradigm. In the second experiment, the Picture Identification Task with the picture-pointing response was compared with the Northwestern University Auditory Test No. 6 in both an open-set and a closed-set response paradigm. The results from this experiment demonstrated significant differences among the three response tasks. The easiest task was a closed-set response to words, the next was a closed-set response to pictures, and the most difficult task was an open-set response. At high stimulus-presentation levels, however, the three tasks produced similar results. Finally, the clinical use of the Picture Identification Task is described along with preliminary results obtained from 30 patients with various communicative impairments.


2021 ◽  
Vol 2 (5) ◽  
pp. 6441-6452
Author(s):  
Roberto García Sánchez ◽  
Justo Pedro Hernández González

Comunidad  Sorda es aquella que participa de unos valores culturales y lingüísticos construidos en torno a la lengua de signos y a una concepción visual del mundo. Entre las personas sordas usuarias de la lengua de signos algunas aprendieron a signar en su infancia y otras siendo ya adultas; hay quienes son usuarias de audífonos o implantes cocleares y, entre ellas, hay quienes usan la lengua de signos y quienes no. También debemos mencionar a aquellas personas sordas que, a causa de un sistema educativo no inclusivo, tienen problemas de expresión y comprensión de textos escritos. Al igual que en el resto de la población, entre las personas sordas encontraremos niños, jóvenes, mayores, personas sordas con otra(s) discapacidad(es)... Todas y cada una de ellas con sus necesidades y demandas concretas. Es importante saber que, aun tratándose de un colectivo heterogéneo, todas las personas sordas, cualquiera que sea su tipo o grado de sordera, situación individual e independientemente de que sean o no usuarias de las lenguas de signos, comparten la necesidad de acceder a la comunicación e información del entorno sin barreras de ningún tipo. Por ese motivo es necesario desarrollar un servicio de orientación, asesoramiento y acción tutorial específico para el alumnado sordo que tenga en cuenta sus necesidades y dificultades y que evite cualquier tipo de discriminación o falta de accesibilidad al contenido universitario del tipo que sea. Por lo tanto, es necesario proporcionar este servicio con los recursos audiovisuales necesarios, intérpretes de lengua de signos española y formación continua a la comunidad universitaria. Es fundamental coordinarse con las asociaciones de personas sordas para cumplir los requisitos básicos que garanticen su inclusión, puesto que éstas son las que conocen mejor sus necesidades por la lucha de sus derechos, y orientar a la universidad para la consecución de dicha finalidad.   A Deaf Community is one that participates in cultural and linguistic values built around sign language and a visual conception of the world. Among the deaf people who used sign language, some learned to sign in their childhood and others when they were adults; there are those who use hearing aids or cochlear implants and, among them, there are those who use sign language and those who do not. We will also find deaf people who, because of a non-inclusive educational system, have problems of expression and comprehension of written texts. As in the rest of the population, among the deaf people we will find children, young people, elderly, deaf people with other disability(ies). . . Each and every one of them with their specific needs and demands. It is important to know that, even if it is a heterogeneous collective, all deaf people, whatever their type or degree of deafness, individual situation and regardless of whether or not they are users of sign languages, share the need to access the communication and information of the environment without barriers of any kind. For this reason it is necessary to develop a service of guidance, advice and specific tutorial action for deaf students that takes into account their needs and difficulties and avoids any type of discrimination or lack of accessibility to university content of any kind. Therefore, it is necessary to provide this service with the necessary audiovisual resources, Spanish sign language interpreters and continuing education to the university community. It is essential to coordinate with associations of deaf people to meet the basic requirements to ensure their inclusion, since they are the ones who best know their needs by fighting for their rights, and guide the university to achieve that goal.


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