title: Neural response telemetry in cochlear implant users.
abstract: Programming of multichannel cochlear implants requires subjective responses to a series of sophisticated psychophysical percepts. It is often difficult for cochlear implant patients (especially young prelinguistically deaf children) to provide adequate responses for device fitting. However, the neural response telemetry (NRT) system renders possible the measurement of the compound action potential threshold. We performed NRT examinations in 27 cochlear implant users with Nucleus 24-channel cochlear implants. Measurements were obtained from five electrodes (3, 5, 10, 15, and 20) in each patient. Our goal was to look for correlation between behavioral subjective thresholds and compound action potentials. The action potentials could be elicited in 23 patients in all measured electrodes. The NRT threshold values were highly correlated with electrical threshold levels obtained through subjective responses. Our results suggest that the electrically elicited neural responses may yield very important information for device fitting in patients with cochlear implants.
authors.affiliation: Department of Otolaryngology, University of Szeged, H-6725 Szeged, Tisza Lajos krt. 111, Hungary. kjg@orl.szote.u-szeged.hu
authors.forename: József G
authors.initials: JG
authors.lastname: Kiss
authors.forename: Ferenc
authors.initials: F
authors.lastname: Tóth
authors.forename: Attila L
authors.initials: AL
authors.lastname: Nagy
authors.forename: János
authors.initials: J
authors.lastname: Jarabin
authors.forename: Alice
authors.initials: A
authors.lastname: Szamosközi
authors.forename: Attila
authors.initials: A
authors.lastname: Torkos
authors.forename: József
authors.initials: J
authors.lastname: Jóri
authors.forename: Jenö
authors.initials: J
authors.lastname: Czigner
mesh_terms: D002648:Child; D019929:Cochlear Implantation / Q000379:methods*; D003638:Deafness / Q000601:surgery*; D004566:Electrodes; D004867:Equipment Design; D006801:Humans; D009434:Neural Pathways / Q000502:physiology*; D013686:Telemetry / Q000295:instrumentation*