title: Assessment of electrostimulation in children supplied with cochlear implants.
abstract: OBJECTIVE
  In children supplied with cochlear implants (CIs), there is an urgent need for objective tests for the assessment of electrostimulation.
  
  
  METHODS
  An optimized procedure for intraoperative and post-operative applications with short duration test time, based on the measurement of the electrical farfield picked up from surface electrodes on the scalp, is presented; therefore, assessment of stimulation is independent of the stimulating electronic circuitry.
  
  
  RESULTS
  The setup was designed for the COMBI40 multichannel CI using a synchronized sampling technique of the amplified signals. The evaluation procedure includes examination of the time course of the signal and calculation of the input output function. With these options, a straightforward judgment of the electrical performance of the implant in situ, reflecting the input to the auditory nerve, is provided.
authors.affiliation: Department for Hearing Speech and Voice Disorders, University of Innsbruck, Austria.
authors.forename: K
authors.initials: K
authors.lastname: Stephan
authors.forename: K
authors.initials: K
authors.lastname: Welzl-Müller
mesh_terms: D002648:Child; D002675:Child, Preschool; D019929:Cochlear Implantation; D003638:Deafness / Q000601:surgery*; D004558:Electric Stimulation / Q000295:instrumentation; D004867:Equipment Design; D006801:Humans; D016343:Monitoring, Intraoperative; D011182:Postoperative Care; D011300:Preoperative Care; D000159:Vestibulocochlear Nerve