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UCSF Multichannel Cochlear Implants

Published online by Cambridge University Press:  26 February 2011

Robert A. Schindler  and
Dorcas K. Kessler
Robert A. Schindler
Affiliation:
University of California, San Francisco, Department of Otolaryngology-Head and Neck Surgery, 533 Parnassus Avenue, Room U-549, San Francisco, CA 94143
Dorcas K. Kessler
Affiliation:
University of California, San Francisco, Department of Otolaryngology-Head and Neck Surgery, 533 Parnassus Avenue, Room U-549, San Francisco, CA 94143
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Abstract

Clinical trials with the UCSF/Storz multichannel cochlear implant began in February 1985. The final patient in this series was implanted in June 1986. The objective of the clinical trial was to evaluate the strategies developed by the UCSF implant team through neurophysiological, histopathological, and psychophysical investigations over the past seventeen years. A total of 16 patients were implanted with this four channel unit, a vocoder-based, compressed-analog system. Results are measured with a battery of speech reception tests, including routine audiometric tasks used to evaluate standard clinical populations. Assessments are administered using conventional audiologic procedures. Tests include monosyllabic word recognition (the standard clinical “speech discrimination” list) and the recognition of key words in sentences. Eleven of the 16 patients have now had their one-year postoperative evaluations, permitting observations on their performance over time. Of these 11 patients, ten (91%) are able to obtain a considerable degree of auditory speech recognition. Relative to other cochlear implant projects, this represents an extremely high proportion of the implant population achieving some level of auditory-only speech understanding. The UCSF/Storz clinical trial has helped to clarify and define the specifications for our next generation implant, an elecrically transparent sixteen channel system.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 110: Symposium M – Biomedical Materials and Devices , 1987 , 29
Copyright
Copyright © Materials Research Society 1988

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References

1. Rebscher, S.J., in Cochlear Implants, edited by Gray, R.F. (College-Hill Press, San Diego, CA, 1985), pp. 74–123; R.A. Schindler and R.F. Gray, Cochlear Implants, edited by R.F. Gray (College-Hill Press, San Diego, CA, 1985), pp. 141–151.Google Scholar
2. Loeb, G., Scientific American 252, 104–111 (1985).Google Scholar
3. Loeb, G., Byers, C.L., Rebscher, S.J., et al., Med. Biol. Eng. Comput. 21, 241–254 (1983).Google Scholar
4. Merzenich, M.M., in Cochlear Implants, edited by Schindler, R.A. and Merzenich, M.M. (Raven Press, New York, 1985), pp. 121–129; P.A. Leake, S.J. Rebscher, D.W. Aird, Cochlear Implants, edited by R.A. Schindler and M.M. Merzenich (Raven Press, New York, 1985), pp. 55–64; R.A. Schindler and D.K. Kessler, Cochlear Implants, edited by R.A. Schindler and M.M. Merzenich (Raven Press, New York, 1985), pp. 407–410.Google Scholar
5. Merzenich, M.M., Rebscher, S.J., Loeb, G.E. et al. , in Cochlear Implants in Clinical Use, edited by Keidel, W.D. and Finkenzeller, P. (Adv. Audiol. 2, 1984), pp. 119–144.Google Scholar
6. Leake-Jones, P.A. and Rebscher, S.J., in Cochlear Prostheses: An International Symposium, edited by Parkins, C.W. and Anderson, S.W. (NY Acad Sci 405, 1983), pp. 203–223.Google Scholar
7. O'Reilly, B.F., Ann. Otol. Rhinol. Laryngol. 29 (Suppl 82), 11–12 (1981).Google Scholar
8. Rebscher, S.J., Byers, C.L., Leake-Jones, P.A., et al., 8th Quarterly Progress Report, National Institutes of Health, Contract #NO1-NS-0-2337, 1982.Google Scholar
9. Schindler, R.A., Kessler, D.K., Rebscher, S.J., and Yanda, J., Otolaryngol. Clin. North Am. 19, 287–305 (1986).Google Scholar
10. Schindler, R.A., Gray, R.F., Rebscher, S.J., and Byers, C.L., Artif. Organs 5 (Suppl), 258–260 (1981).Google Scholar
11. Schindler, R.A., Kessler, D.K., Rebscher, S.J., Jackler, R.K., and Merzenich, M.M., Laryngoscope 97, 50–56 (1987).Google Scholar
12. Schindler, R.A. and Kessler, D.K., Am. J. Otol. 8, 247–255 (1987).Google Scholar
13. Schindler, R.A., Kessler, D.K., Rebscher, S.J., Yanda, J.L., and Jackler, R.K., Laryngoscope 96, 597–603 (1986).Google Scholar
14. Owens, E., Kessler, D.K., Raggio, M., and Schubert, E.D., Ear. Hear. 6, 280–287 (1985).Google Scholar
15. Owens, E., Kessler, D.K., and Schubert, E.D., Arch. Otolaryngol. 108, 478–483 (1982).Google Scholar
16. Owens, E. and Raggio, M., J. Speech Hear. Disord. 52, 120–128 (1987).Google Scholar
17. DeFilippo, C. L. and Scott, B.L., J. Acoust. Soc. Am. 63, 1186–1192 (1978).Google Scholar
18. Wilson, B.S., Finley, C.C., Farmer, J.C., Lawson, D.T., Weber, B.A., Wolford, R.D., Kenan, P.D., White, M.W., Merzenich, M.M., and Schindler, R.A., Laryngoscope (in press).Google Scholar
19. Wilson, B.S., presented at the 1987 Gordon Research Conference, Implantable Auditory Prostheses, New London, NH, 1987 (unpublished).Google Scholar