Enhanced modiolar stimulation effects in the inferior colliculus

Author

Lithgow, Brian J.

Author_Institution

Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Clayton, Vic., Australia

Volume

2

fYear

2001

fDate

2001

Firstpage

1026

Abstract

Both a perceived low frequency shift by cochlear implant patients in response to high stimulus levels and a perceived lower pitch for place of electrical stimulation have previously been described when compared with acoustic stimulation on the opposite side. Modiolar stimulation is likely the cause. This preliminary study quantifies and provides one explanation for the extent of modiolar stimulation observed as a function of current level as recorded in a population of inferior colliculus units. The inferior colliculus units were driven by scala tympani bipolar charge balanced stimulation.

Keywords

bioelectric phenomena; ear; hearing; hearing aids; prosthetics; cochlear implant patients; current level; electrical stimulation; enhanced modiolar stimulation effects; high stimulus levels; inferior colliculus; perceived low frequency shift; perceived lower pitch; scala tympani bipolar charge balanced stimulation; Acoustic measurements; Animals; Attenuation; Cochlear implants; Deafness; Electric variables measurement; Electrical stimulation; Electrodes; Ethics Committee; Systems engineering and theory;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE

ISSN

1094-687X

Print_ISBN

0-7803-7211-5

Type

conf

DOI

10.1109/IEMBS.2001.1020363

Filename

1020363