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Fourth International Symposium and Workshops: Objective Measures in Cochlear Implants

Medical University of Hannover

01.06. bis 04.06.2005, Hannover

Effects of chronic electrical stimulation on the ECAP and EABR in human cochlear implant users: a longitudinal study

Meeting Abstract

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  • corresponding author C. Brown - University of Iowa, Iowa City
  • P. Abbas - University of Iowa, Iowa City
  • C. Etler - University of Iowa, Iowa City

Medical University of Hannover, Department of Otolaryngology. Fourth International Symposium and Workshops: Objective Measures in Cochlear Implants. Hannover, 01.-04.06.2005. Düsseldorf, Köln: German Medical Science; 2005. Doc05omci035

The electronic version of this article is the complete one and can be found online at:

Published: May 31, 2005

© 2005 Brown et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License ( You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.



Since the Iowa Cochlear Implant Grant was first funded in 1985, we have been following an increasingly larger cohort of cochlear implant recipients. This cohort includes both adults and children and includes patients who have received one of three different multichannel cochlear implants. Over the past two decades we have been using electrically evoked auditory potentials (primarily the EABR and the ECAP) to document changes in response of the peripheral auditory system to electrical stimulation. This presentation will review the impact that long term use of a cochlear implant has on electrophysiologic measures of auditory function in cochlear implant users. Results show little evidence that long-term use of a cochlear implant, either by pre-lingually deafened children or post-lingually deafened adults, have a negative impact on the response of the auditory system over time.