Behavioral explorations of cochlear gain reduction

2014 ◽  
Vol 135 (4) ◽  
pp. 2384-2384
Author(s):  
Elizabeth A. Strickland ◽  
Elin Roverud ◽  
Kristina DeRoy Milvae
Keyword(s):  
Gain Reduction ◽  
Cochlear Gain

A summary of behavioral measures of cochlear gain and gain reduction in listeners with normal hearing or minimal cochlear hearing loss

2021 ◽  
Vol 149 (4) ◽  
pp. A106-A106
Author(s):  
Elizabeth A. Strickland ◽  
Miranda Skaggs ◽  
Anna Hopkins ◽  
Nicole Mielnicki ◽  
William B. Salloom ◽  
...  
Keyword(s):  
Hearing Loss ◽  
Normal Hearing ◽  
Behavioral Measures ◽  
Cochlear Hearing Loss ◽  
Gain Reduction ◽  
Cochlear Gain

scholarly journals Behavioral Measures of Cochlear Gain Reduction Depend on Precursor Frequency, Bandwidth, and Level

2021 ◽  
Vol 15 ◽  
Author(s):  
Kristina DeRoy Milvae ◽  
Elizabeth A. Strickland
Keyword(s):  
Physiological Mechanism ◽  
Otoacoustic Emission ◽  
Broadband Noise ◽  
Signal Frequency ◽  
Frequency Content ◽  
Afferent Fibers ◽  
Gain Reduction ◽  
Cochlear Gain ◽  
Medial Olivocochlear ◽  
Signal Threshold

Sensory systems adjust to the environment to maintain sensitivity to change. In the auditory system, the medial olivocochlear reflex (MOCR) is a known physiological mechanism capable of such adjustment. The MOCR provides efferent feedback between the brainstem and cochlea, reducing cochlear gain in response to sound. The perceptual effects of the MOCR are not well understood, such as how gain reduction depends on elicitor characteristics in human listeners. Physiological and behavioral data suggest that ipsilateral MOCR tuning is only slightly broader than it is for afferent fibers, and that the fibers feed back to the frequency region of the cochlea that stimulated them. However, some otoacoustic emission (OAE) data suggest that noise is a more effective elicitor than would be consistent with sharp tuning, and that a broad region of the cochlea may be involved in elicitation. If the elicitor is processed in a cochlear channel centered at the signal frequency, the growth of gain reduction with elicitor level would be expected to depend on the frequency content of the elicitor. In the current study, the effects of the frequency content and level of a preceding sound (called a precursor) on signal threshold was examined. The results show that signal threshold increased with increasing precursor level at a shallower slope for a tonal precursor at the signal frequency than for a tonal precursor nearly an octave below the signal frequency. A broadband noise was only slightly more effective than a tone at the signal frequency, with a relatively shallow slope similar to that of the tonal precursor at the signal frequency. Overall, these results suggest that the excitation at the signal cochlear place, regardless of elicitor frequency, determines the magnitude of ipsilateral cochlear gain reduction, and that it increases with elicitor level.

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

2018 ◽  
Vol 143 (3) ◽  
pp. 1964-1964
Author(s):  
Elizabeth A. Strickland ◽  
Hayley Morris ◽  
Miranda Skaggs ◽  
William Salloom ◽  
Alexis Holt
Keyword(s):  
Hearing Loss ◽  
Normal Hearing ◽  
Behavioral Measures ◽  
Cochlear Hearing Loss ◽  
Gain Reduction ◽  
Cochlear Gain

scholarly journals Psychoacoustic measurements of ipsilateral cochlear gain reduction as a function of signal frequency

2018 ◽  
Vol 143 (5) ◽  
pp. 3114-3125 ◽  
Author(s):  
Kristina DeRoy Milvae ◽  
Elizabeth A. Strickland
Keyword(s):  
Signal Frequency ◽  
Gain Reduction ◽  
Cochlear Gain

Cochlear gain reduction in listeners with borderline normal quiet thresholds

2017 ◽  
Vol 141 (5) ◽  
pp. 3897-3897
Author(s):  
Elizabeth A. Strickland ◽  
Alexis Holt ◽  
Hayley Morris
Keyword(s):  
Gain Reduction ◽  
Cochlear Gain
Sign in / Sign up

Export Citation Format

Share Document