Wideband Acoustic Immittance in Cochlear Implant Recipients: Reflectance and Stapedial Reflexes.

ABSTRACT:

Objectives

to characterize differences in wideband power reflectance for ears with and without cochlear implants (CIs), to describe electrically evoked stapedial reflex (eSR)-induced changes in reflectance, and to evaluate the benefit of a broadband probe for reflex threshold determination for CI recipients. It was hypothesized that reflectance patterns in ears with CIs would be consistent with increased middle ear stiffness and that reflex thresholds measured with a broadband probe would be lower compared with thresholds obtained with a single-frequency probe.

Design

Eleven CI recipients participated in both wideband reflectance and eSR testing. Ipsilateral reflexes were measured with three probes: a broadband chirp (swept from 200 to 8000 Hz), a 226 Hz tone, and a 678 Hz t

SUBMITTER: Scheperle RA 

PROVIDER: S-EPMC8039839 | biostudies-literature | 2020 Jul/Aug

REPOSITORIES: biostudies-literature