Evoked-response forward-masking functions in chinchillas with noise-induced permanent hearing loss

Shalini Arehole; Richard J. Salvi; Samuel S. Saunders; Michael Anne Gratton

doi:10.3109/00206098909081614

Evoked-response forward-masking functions in chinchillas with noise-induced permanent hearing loss

Shalini Arehole, Richard J. Salvi, Samuel S. Saunders, Michael Anne Gratton

Department of Otolaryngology

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Evoked-response forward-masking functions were measured by chronic électrodes in the inferior colliculus of the chinchilla before and after exposure to an intense tone that produced a permanent hearing loss. Before exposure, the forward-masking time constants ranged from 50 to 90 ms. After exposure, the forward-masking time constants increased significantly in the region of hearing loss, but not in regions where hearing was normal. The effect of the hearing loss on the time course of forward masking was most pronounced once the hearing loss exceeded 20-25 dB. These physiological changes in the evoked-response forward-masking functions appear to parallel those observed psychophysically in human listeners.

Original language	English
Pages (from-to)	92-110
Number of pages	19
Journal	International Journal of Audiology
Volume	28
Issue number	2
DOIs	https://doi.org/10.3109/00206098909081614
State	Published - 1989

Keywords

Auditory-evoked response
Forward masking
Hair cell loss
Hearing loss
Inferior colliculus
Temporal resolution

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title = "Evoked-response forward-masking functions in chinchillas with noise-induced permanent hearing loss",

abstract = "Evoked-response forward-masking functions were measured by chronic {\'e}lectrodes in the inferior colliculus of the chinchilla before and after exposure to an intense tone that produced a permanent hearing loss. Before exposure, the forward-masking time constants ranged from 50 to 90 ms. After exposure, the forward-masking time constants increased significantly in the region of hearing loss, but not in regions where hearing was normal. The effect of the hearing loss on the time course of forward masking was most pronounced once the hearing loss exceeded 20-25 dB. These physiological changes in the evoked-response forward-masking functions appear to parallel those observed psychophysically in human listeners.",

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AU - Gratton, Michael Anne

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AB - Evoked-response forward-masking functions were measured by chronic électrodes in the inferior colliculus of the chinchilla before and after exposure to an intense tone that produced a permanent hearing loss. Before exposure, the forward-masking time constants ranged from 50 to 90 ms. After exposure, the forward-masking time constants increased significantly in the region of hearing loss, but not in regions where hearing was normal. The effect of the hearing loss on the time course of forward masking was most pronounced once the hearing loss exceeded 20-25 dB. These physiological changes in the evoked-response forward-masking functions appear to parallel those observed psychophysically in human listeners.

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KW - Inferior colliculus

KW - Temporal resolution

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Evoked-response forward-masking functions in chinchillas with noise-induced permanent hearing loss

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Keywords

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