Graeme Clark Collection
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ItemThe relationship between aetiology of hearing loss and outcome following cochlear implantation in a paediatric population(Monduzzi Editore, 1997)Eighty-eight children who underwent cochlear implantation at the University of Melbourne Cochlear Implant Clinic are reviewed. The aetiology of the hearing loss is classified and is compared to their best level of speech perception performance. The group whose hearing loss was not congenital in origin performed better than those who were congenital in origin. Of those whose hearing loss was congenital in nature those with rubella appeared to perform best.
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ItemRehabilitation strategies for adult cochlear implant users(Monduzzi Editore, 1997)This paper summarizes open-set speech perception results using audition alone for a large group of adult Nucleus cochlear implant users in Melbourne. The results show wide variation in performance but significant improvement over the years from 1982 to 1995. Analysis of these results shows that speech processor developments have made the major contribution to this improvement over this time. Recent results for patients using the SPECTRA-SPEAK processor show !hat most subjects obtain good speech perception within six months of implantation and the need for intensive auditory training is minimal for many of these patients. Postoperative care should encourage consistent device use by providing opportunities for success and providing long term technical support for implant users. In some cases, including elderly patients, those with long term profound deafness, and those with special needs, there will still be a need for additional rehabilitation and auditory training support.
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ItemFactors affecting outcomes in children with cochlear implants(Monduzzi Editore, 1997)Open-set speech perception tests were completed for a group of 52 children and adolescents who were long-term users of the Nucleus multiple channel cochlear prosthesis. Results showed mean scores for the group of 32.4% for open-set BKE sentences and 48.1% for phonemes in open-set monosyllabic words. Over 80% of the group performed significantly on these tas1cs. Age at implantation was identified as a significant factor affecting speech perception performance with improved scores for children implanted early. This factor was evident in the results at least down to the age of three years. Duration.. of profound hearing loss, progressive hearing loss, educational program and preoperative residual hearing were also identified as significant factors that may affect speech perception performance.
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ItemChanges in synthetic and natural vowel perception after specific training for congenitally deafened patients using a multichannel cochlear implant(Monduzzi Editore, 1997)The study investigated whether congenitally deafened patients using the 22-e1ectrode cochlear implant who show limited speech perception ability, could improve their ability to use place-coded vowel formant information after specific training. The relationship between electrode difference limens and synthetic vowel recognition also investigated. A heterogeneity of findings characterized the patients. Significant improvements on several assessments of synthetic vowel perception occurred after 10 training sessions for 2 of the patients and gains were consistent with their electrode discrimination ability. There were minimal gains for the remaining patients. A poorer apical electrode difference limen could partly explain the relatively low scores pre-and post-training for one of these patients.
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ItemSpeech perception, production and language results in a group of children using the 22-electrode cochlear implant( 1989)Paper presented at the 118th Meeting of the Acoustical Society of America