title: Evaluation of the neural response telemetry (NRT) capabilities of the nucleus research platform 8: initial results from the NRT trial.
abstract: The purpose of this study was to evaluate the performance of the new features of the Nucleus Research Platform 8 (RP8), a system developed specifically for research purposes The RP8 consists of a research implant, a speech processor and a new NRT software (NRT v4), and includes comparisons of the different artefact-cancellation methods, NRT threshold, and recovery function measurements. The system has new artefact-suppression techniques and new diagnostic capabilities; their performance has been verified in animal experiments. In this study, NRT data were collected from 15 postlingually deafened adult cochlear implant patients intraoperatively and up to 6 months postoperatively after switch-on. The initial investigation in two clinics in Europe focused primarily on the enhanced NRT capabilities Results from the trial in two European clinics indicate that NRT measurements can be obtained with lower noise levels. A comparison of the different artefact-cancellation techniques showed that the forward-masking paradigm implemented in the Nucleus 3 system is still the method of choice. The focus of this report is on recovery function characteristics, which may give insight into auditory nerve fiber properties with regard to higher stimulation rates.
authors.affiliation: Medizinische Hochschule Hannover, Hannover, Germany. bat@hno.mh-hannover.de
authors.forename: Rolf D
authors.initials: RD
authors.lastname: Battmer
authors.forename: Norbert
authors.initials: N
authors.lastname: Dillier
authors.forename: Wai K
authors.initials: WK
authors.lastname: Lai
authors.forename: Benno P
authors.initials: BP
authors.lastname: Weber
authors.forename: Carolyn
authors.initials: C
authors.lastname: Brown
authors.forename: Bruce J
authors.initials: BJ
authors.lastname: Gantz
authors.forename: J Thomas
authors.initials: JT
authors.lastname: Roland
authors.forename: Noel J
authors.initials: NJ
authors.lastname: Cohen
authors.forename: William
authors.initials: W
authors.lastname: Shapiro
authors.forename: Joerg
authors.initials: J
authors.lastname: Pesch
authors.forename: Matthijs J
authors.initials: MJ
authors.lastname: Killian
authors.forename: Thomas
authors.initials: T
authors.lastname: Lenarz
mesh_terms: D000293:Adolescent; D000328:Adult; D019929:Cochlear Implantation; D003054:Cochlear Implants; D003056:Cochlear Nerve / Q000502:physiology*; D004566:Electrodes; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D006320:Hearing Tests / Q000379:methods*; D006801:Humans; D016343:Monitoring, Intraoperative; D013686:Telemetry / Q000295:instrumentation*