Graeme Clark Collection

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http://hdl.handle.net/11343/375

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Start date: 1990 × End date: 1999 × Subject: cochlear implant × Subject: paediatric otology × Type: Conference Item × Author: BARKER, ELIZABETH ×

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    Speech perception benefits for children using the 22-channel Melbourne/cochlear hearing prosthesis [Abstract]
    Sarant, J.Z. ; Hollow, P.W. ; Clark, Graeme M. ; Dowell, Richard C. ; Cowan, Robert S.C. ; Pyman, B. C. ; Dettman, S. J. ; RANCE, GARY ; Barker, Elizabeth J. ( 1993)
    In 1985; the first child was implanted with the Cochlear 22-channel cochlear prosthesis at the University of Melbourne Royal Victorian Eye & Ear Hospital Cochlear Implant Clinic. There are now 42 children who have received the device in Melbourne. Analysis of patient details for these children show a very heterogeneous group, with a wide range in age, hearing thresholds, duration of deafness and aetiology. The major aetiologies found were either a congenital profound deafness.; or a hearing loss due to meningitis. In all but 3 cases, the children are using 15 or more electrodes in the array. Speech perception benefits have been analyzed according to a six-level hierarchical classification scheme. All of-the children achieved a minimum benefit of discrimination of suprasegmental information (Category 2), and 59% of the children achieved open-set understanding of unfamiliar speech material without the aid of lip-reading (Categories 5 & 6). Detailed analysis suggests that the majority of children achieving open-set speech perception benefits had more than one year of experience with their implant. and less than seven years of profound deafness prior to implantation.
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    Factors associated with open-set speech perception in children using the Cochlear multiple-channel prosthesis [Abstract]
    Yaremko, R. ; Rance, G. ; Sarant, Julia Z. ; Dawson, Pam W. ; Gibson, William P.R. ; Clark, Graeme M. ; Dowell, Richard C. ; Cowan, Robert S.C. ; Brown, Catherine D. ; Dettman, Shani J. ; Barker, Jane ; Barker, Elizabeth J. ( 1993)
    Since 1985, nearly 100 children have received the 22-channel cochlear prosthesis from the Melbourne and Sydney cochlear implant clinics. These two clinics account for the bulk of casesin Australia, and have similar management philosophies and selection criteria. The patient population represents a variety of etiologies, and ranges in age from 2 - 18 years of age. Bothcongenital and postlinguistic hearing losses are included. In order to assess benefit to speech perception in such a diverse group, the children's results have been tabulated according to a six level hierarchical scale of speech perception achievement. The scale ranges from category I,detection of sound only, to category 6, which includes significant perception scores for open-setwords and sentences. Analysis of the results shows that the majority of the children are achieving open-set speech perception benefits, and that results continue to improve with additional experience with their devices. There are a number of contributing factors to these open-set speech� perception results which have impact both on selection issues and on habilitation with different age ranges �of patients.