Effects of middle-ear and medial olivocochlear reflexes on TEOAE frequency, magnitude, and phase

Shawn S Goodman; Soumya Venkitakrishnan; Weston J Adkins; Laura D Mueldener

doi:10.1063/1.5038537

Back

Effects of middle-ear and medial olivocochlear reflexes on TEOAE frequency, magnitude, and phase

Conference proceeding

Open access

Peer reviewed

Effects of middle-ear and medial olivocochlear reflexes on TEOAE frequency, magnitude, and phase

Shawn S Goodman, Soumya Venkitakrishnan, Weston J Adkins and Laura D Mueldener

AIP conference proceedings, Vol.1965(1)

TO THE EAR AND BACK AGAIN - ADVANCES IN AUDITORY BIOPHYSICS: Proceedings of the 13th Mechanics of Hearing Workshop

05/31/2018

DOI: 10.1063/1.5038537

Files and links (1)

url

https://doi.org/10.1063/1.5038537View

Published (Version of record) Open Access

Abstract

Transient otoacoustic emissions (TEOAEs) and wideband pressure reflectance were simultaneously measured in 24 young normal-hearing listeners. Contralateral acoustic stimulation (CAS) was delivered across a wide range of levels (36-78 dB SL) to activate the medial olivocochlear reflex (MOCR) and middle-ear muscle reflex (MEMR). The resulting measurements were analyzed in terms of changes in frequency, magnitude, and phase. Changes in wideband reflectance were systematic across levels within individuals, but highly variable across subjects. These changes may provide a sensitive measure of middle-ear muscle reflex activation, but do not appear to be helpful in disentangling the effects of the two reflexes on TEOAEs. Frequency changes in TEOAEs occurred in about a third of measurements, but did not appear to be systematically related to CAS level and showed both increases and decreases. Frequency shifts occurred more often in the presence of MEMR. Changes in TEOAE magnitude and phase, after accounting for frequency changes, are reported. Average shifts at the highest CAS level were -4.4 dB and 0.22 cycles of phase lead.

Details

Title: Subtitle: Effects of middle-ear and medial olivocochlear reflexes on TEOAE frequency, magnitude, and phase
Creators: Shawn S Goodman - University of Iowa
Soumya Venkitakrishnan - Dept. of Communication Sciences and Disorders, University of Iowa, Iowa City IA 52242, USA
Weston J Adkins - Dept. of Communication Sciences and Disorders, University of Iowa, Iowa City IA 52242, USA
Laura D Mueldener - Dept. of Communication Sciences and Disorders, University of Iowa, Iowa City IA 52242, USA
Contributors: Christopher Bergevin (Editor) - York University
Sunil Puria (Editor) - Harvard Medical School
Resource Type: Conference proceeding
Publication Details: AIP conference proceedings, Vol.1965(1)
Conference: TO THE EAR AND BACK AGAIN - ADVANCES IN AUDITORY BIOPHYSICS: Proceedings of the 13th Mechanics of Hearing Workshop
DOI: 10.1063/1.5038537
ISSN: 0094-243X
eISSN: 1551-7616
Number of pages: 9
Date published: 05/31/2018
Academic Unit: Communication Sciences and Disorders
Record Identifier: 9984258738702771

Metrics

57 Record Views

6 Times Cited - Web of Science