Abstract：
:We report the changes in auditory function that occurred at selected intervals following exposure to an intense pure-tone stimulus. One day old chicks were exposed to a 0.9 kHz tone for 48 h at 120 dB. At 0, 1, 3, 6, 9, 12 and 15 days after exposure, cochlear nucleus sound-evoked potentials were used to assess threshold sensitivity and frequency selectivity. Immediately after removal from the pure tone a threshold shift of 60 dB relative to age-matched controls was measured. The sharpness of tuning curves, as measured by Q10 dB, decreased by over 50%. By post-exposure day 15, near complete recovery of function was seen, with the greatest recovery occurring within the first three days. We relate these results to recent reports of structural recovery on the basilar papilla of the chick.
journal_name
Hear Resjournal_title
Hearing researchauthors
McFadden EA,Saunders JCdoi
10.1016/0378-5955(89)90012-9subject
Has Abstractpub_date
1989-09-01 00:00:00pages
205-15issue
2-3eissn
0378-5955issn
1878-5891pii
0378-5955(89)90012-9journal_volume
41pub_type
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