TY - JOUR
T1 - Human medial efferent activity elicited by dynamic versus static contralateral noises
AU - Mertes, Ian Benjamin
N1 - Funding Information:
This work was supported by the American Speech-Language-Hearing Foundation (2017 New Investigators Research Grant) and the Campus Research Board of the University of Illinois at Urbana-Champaign (Arnold O. Beckman Award). The funding agencies had no involvement in the study design, data collection, analysis, or dissemination of this work. Portions of this work were presented at the 41st Annual MidWinter Meeting of the Association for Research in Otolaryngology (ARO), February 9–14, 2018, San Diego, CA. The author thanks the participants for their time, Kristin M. Johnson and Zoë A. Dinger for assistance with data collection, Dr. Marjorie R. Leek and attendees of the 2018 ARO Meeting for helpful discussions regarding this research, and Dr. David J. Lilly and the National Center for Rehabilitative Auditory Research for providing the multi-talker babble digital sound file ( Lilly et al., 2011 ) used to generate the EM elicitor stimulus.
Funding Information:
This work was supported by the American Speech-Language-Hearing Foundation (2017 New Investigators Research Grant) and the Campus Research Board of the University of Illinois at Urbana-Champaign (Arnold O. Beckman Award). The funding agencies had no involvement in the study design, data collection, analysis, or dissemination of this work. Portions of this work were presented at the 41st Annual MidWinter Meeting of the Association for Research in Otolaryngology (ARO), February 9?14, 2018, San Diego, CA. The author thanks the participants for their time, Kristin M. Johnson and Zo? A. Dinger for assistance with data collection, Dr. Marjorie R. Leek and attendees of the 2018 ARO Meeting for helpful discussions regarding this research, and Dr. David J. Lilly and the National Center for Rehabilitative Auditory Research for providing the multi-talker babble digital sound file (Lilly et al., 2011) used to generate the EM elicitor stimulus.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/8
Y1 - 2018/8
N2 - The medial olivocochlear reflex (MOCR) modifies cochlear amplifier function to improve encoding of signals in static noise, but conflicting results have been reported regarding how the MOCR responds to dynamic, temporally-complex noises. The current study utilized three MOCR elicitors with identical spectral content but different temporal properties: broadband noise, amplitude-modulated noise, and speech envelope-modulated noise. MOCR activity was assessed using contralateral inhibition of transient-evoked otoacoustic emissions in 27 normal-hearing young adults. Elicitors were presented contralaterally at two intensities of 50 and 60 dB SPL. Magnitude and growth of contralateral inhibition with increasing elicitor intensity were compared across the three elicitor types. Results revealed that contralateral inhibition was significantly larger at the elicitor intensity of 60 dB SPL than at 50 dB SPL, but there were no significant differences in the magnitude and growth of inhibition across the three elicitors, contrary to hypothesis. These results suggest that the MOCR responds similarly to both static and dynamic noise.
AB - The medial olivocochlear reflex (MOCR) modifies cochlear amplifier function to improve encoding of signals in static noise, but conflicting results have been reported regarding how the MOCR responds to dynamic, temporally-complex noises. The current study utilized three MOCR elicitors with identical spectral content but different temporal properties: broadband noise, amplitude-modulated noise, and speech envelope-modulated noise. MOCR activity was assessed using contralateral inhibition of transient-evoked otoacoustic emissions in 27 normal-hearing young adults. Elicitors were presented contralaterally at two intensities of 50 and 60 dB SPL. Magnitude and growth of contralateral inhibition with increasing elicitor intensity were compared across the three elicitor types. Results revealed that contralateral inhibition was significantly larger at the elicitor intensity of 60 dB SPL than at 50 dB SPL, but there were no significant differences in the magnitude and growth of inhibition across the three elicitors, contrary to hypothesis. These results suggest that the MOCR responds similarly to both static and dynamic noise.
KW - Medial olivocochlear reflex
KW - Auditory efferent system
KW - Otoacoustic emissions
KW - Contralateral suppression
KW - Amplitude modulation
KW - Multi-talker babble
UR - http://www.scopus.com/inward/record.url?scp=85047200849&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85047200849&partnerID=8YFLogxK
U2 - 10.1016/j.heares.2018.05.007
DO - 10.1016/j.heares.2018.05.007
M3 - Article
C2 - 29793763
AN - SCOPUS:85047200849
VL - 365
SP - 100
EP - 109
JO - Hearing Research
JF - Hearing Research
SN - 0378-5955
ER -