Seminars in Hearing Research at Purdue (SHRP)

Title:  The effect of broadband elicitor duration on transient-evoked otoacoustic emissions and a behavioral measure of gain reduction

Speaker: William Salloom, Ph.D. Candidate, SLHS (Strickland lab)

Date: February 27, 2020

Time: 10:30 – 11:20 am

Location: LYLE 1150

Abstract: 

Humans are able to encode sound over a wide range of intensities despite the fact that neurons in the auditory periphery have much smaller dynamic ranges. There is a feedback system that originates in the brainstem that may help solve the dynamic range problem. This system is the medial olivocochlear reflex (MOCR), which is a bilateral sound-activated system which decreases amplification of sound by the outer hair cells in the cochlea. Much of the previous research on the MOCR in animals and humans has been physiologically based, and has used long broadband noise elicitors. However, the effect of the duration of broadband noise elicitors on similar behavioral tasks is unknown. In the current study, we explored the effects of ipsilateral broadband noise elicitor duration both physiologically and behaviorally in the same subjects. Understanding these effects is not only of fundamental importance to how the auditory system adapts to sound over time, but is also of practical importance in laboratory settings that use broadband noise to elicit the MOCR.

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The working schedule for the year:

https://purdue.edu/TPAN/hearing/shrp_schedule

The titles and abstracts of the talks will be updated here:

https://purdue.edu/TPAN/hearing/shrp_abstracts