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Predicting Speech Perception Results for Children Using Multichannel Cochlear Implants
| Content Provider | Semantic Scholar |
|---|---|
| Author | Dowell, Richard C. |
| Copyright Year | 2009 |
| Abstract | S OF XXVI INTERNATIONAL CONGRESS OF AUDIOLOGY ,0 do well with :uration of pro idvantageous, S for the older different from abilitation Children 'Implants NI J DETTMANU, \NDRA TOMOV2, IE M CLARK U,].4 lV, The University of lelbourne, Australia al Cochlear Implant Clinic, Australia Dr Cochlear Implant )Oovatlon, Australia 'elbourne, Australia r implant field o program for g implants. 1the incorpo llage develop areas for such peech percep have demon )ken language lee the results ains difficult, Teet of habili to determine n is desirable ry study con erceplion and 'oups of chil us coch lear 'st group (n regular habil Ie Cochlear Ir post-opera :11 I I) was little regular 'ative period. In results for fieant differ ide range of ived regular, formal naOlllU:!llVll u .... ".v..~ .. _._ _ ,er per formance on all measures. These groups included only congenitally, profoundly hear ing-impaired children and did not differ sig nificantly on mean age at implant or experience at the time of assessment. A more comprehensive study is needed to clar ify these results on a larger group of chil dren, and to control for additional confounding variables. Nonetheless, these results provide support for the incorporation of regular long-term habilitation into cochlear implant programs for children. Predicting Speech Perception Results for Children Using Multichannel Cochlear Implants RICHARD C DOWELL U.3,4, SHANI J DETTMAN2.3, SARAH WILLIAMS', KATIE HILL2.3, ALEXANDRA TOMOV1, GRAEME M (LARKI,2.3.4 1 Department of Otolaryngology,The University of Melbourne, Melbourne, Australia 2 The Royal Victorian Eye and Ear Hospital Cochlear Implant Clinic, Australia 3 Cooperative Research Centre for Cochlear Implant and Hearing Aid Innovation, Australia 4 The Bionic Ear Institute. Melbourne. Australia It is most helpful in counselling families con sidering cochlear implantation to have some ability to predict outcomes for individual hearing-impaired children. Speech perception results for open-set words and sentences have been collected for all children implanted with the Nucleus device in Melbourne. Assess ments are available at approximately six month intervals following implantation, Data was collected for each child regarding type of hearing loss, duration and age at onset of pro found hearing loss, age at implantation, pre and post-implant communication mode, developmental delay, speech coding scheme and implant experience. TIlese data were used as predictor variables in step-wise multiple linear regression analyses with the speech perception scores as the dependent variables. Shorter duration of profound hearing loss, later onset of profound hearing loss, exclu sively oral communication mode following implantation, and longer implant experience were associated with significantly (p < 0.00 I) improved open-set speech perception. The use of the SPEAK signal coding scheme was shown to provide significantly better speech perception performance for children (p < 0.001). Developmental delay was associated with poorer speech perception outcomes (p < 0.0 I). Over 50% of the variance in speech perception scores was accounted for by these variables. The study suggests that younger implantation for congenitally deaf children leads to improved speech perception results. On the other hand, the development of audi tory language skills in implanted children may be as important as age at implantation in enhancing long term outcomes. Regression equations derived from these results can be used to predict outcomes for cochlear implant candidates with a reasonable accuracy. Improving and Preserving Speech Perception in Noise Using Advanced Digital Directional Technology OLE DYRLUND, STEEN 0. OLSEN, JENNIFER GROTH, CHARLOTTE T. JESPERSEN GN Resound, Taastrlld. Denmark Poor performance in noise is a leading user complaint about hearing instruments. The use of amplification alone does not solve this problem. Enhancement of the signal-to-noise ratio is needed (Killion, 1997), and the most successful method until now seems to be the use of directi.onal microphones and espe cially multi-microphone technology (Valente, 1998). Recently this technology has been further improved with the introduc tion of adaptive directional systems. The pur pose of Jhese systems is to automatically optimise the directional characteristics to reduce the interference from the most intense noise sources in the environment. Another important issue is amplitude and pllase mis match between the two microphones. This can be corrected for in the manufacturing process, but drift over time and influence from user specific physical factors such as head shape and hairstyle can only be elimi nated employing an automatic microphone -~-----------------~ ~---------------..---~.' |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://minerva-access.unimelb.edu.au/bitstream/handle/11343/27601/119583_vol13_1519.pdf?isAllowed=y&sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
