Seminars in Hearing Research at Purdue (SHRP)

Date: Thursday, August 25, 2022

Time: 10:30 – 11:20 am

Location: LYLE 1150

Title: Behavioral measures of cochlear gain and gain reduction in listeners with normal hearing or minimal cochlear hearing loss

Speaker: Beth Strickland, Professor in SLHS

Abstract: An important aspect of many sensory systems is the ability to adjust the dynamic range in response to the environment, so that changes are detectable.  In the auditory system, physiological measures have shown that the medial olivocochlear reflex (MOCR) shifts the dynamic range of the cochlear active process in response to sound.  However, the perceptual effects of the MOCR are not fully understood. We have developed behavioral techniques to measure changes in perception in response to preceding sound.  These measures suggest a reduction in the amplification, or gain, of the cochlea following sound, which could be consistent with the action of the MOCR.  A study in progress in the Psychoacoustics Lab examines the relationship between cochlear hearing impairment and gain reduction.  If gain is permanently reduced by cochlear hearing impairment, we might expect to see less gain reduction, meaning less adjustment to the environment.  We’ll examine whether this happens, and also look at the strength of gain reduction across audiometric frequencies.  

Zoom Info: https://purdue-edu.zoom.us/j/4326340458

Meeting ID: 432 634 0458

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The working schedule for this academic will be here soon:

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

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

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