Comparison of half-band and full-band electrodes for intracochlear electrical stimulation
AuthorXu, Shi-Ang; McAnally, Ken I.; Xu, Jin.; Clark, Graeme M.
Source TitleAnnals of Otology, Rhinology and Laryngology
Document TypeJournal Article
CitationsXu, S., McAnally, K. I., Xu, J., & Clark, G. M. (1993). Comparison of half-band and full-band electrodes for intracochlear electrical stimulation. Annals of Otology, Rhinology and Laryngology, May, 102(5), 363-367.
Access StatusOpen Access
This is a publisher’s version of an article published in Annals of Otology, Rhinology & Laryngology published by Annals Publishing Company. This version is reproduced with permission from Annals Publishing Company. http://www.annals.com/
It was hypothesized that intracochlear stimulating electrodes oriented toward the modiolus would require a lower stimulus current to elicit a threshold neural response than longitudinal band electrodes. Electrically evoked auditory brain stem responses (EABRs) and electrode impedances were recorded with full-band and oriented half-band scala tympani electrodes in anesthetized, deafened cats. To elicit a threshold EABR, the stimulus current required for stimulation through half-band electrodes oriented toward the modiolus was not significantly different from the current required for stimulation through full-band electrodes. The impedances of full-band electrodes were significantly lower than those of half-band electrodes. Considering the significantly higher impedance and current density of half band electrodes in comparison to full-band electrodes, as well as the critical orientation of half-band electrodes during implantation, we believe that full-band electrodes have advantages over half-band electrodes for scala tympani implantation.
Keywordscochlear implant; electrically evoked auditory brain stem response; half-band electrode
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- Graeme Clark Collection