EFFECTS OF IMPULSE NOISE OF TWO INTENSITIES ON AUDITORY ORGAN DAMAGE IN GUINEA PIGS
- VernacularTitle:两种强度的脉冲噪声对豚鼠听器的损伤
- Author:
Wenyuan GAO
- Publication Type:Journal Article
- Keywords:
explosive injury;
impulse noise;
threshold shift;
hair cells
- From:
Academic Journal of Second Military Medical University
1985;0(05):-
- CountryChina
- Language:Chinese
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Abstract:
Guinea pigs were exposed to 10 impulses of either 157-or 163dB peak SPL.The threshold shift recovery was monitored for 30 d, and tympanometric changes and co-chlear hislochemistry were investigated.The results showed that the 157dB level produced a recovey pattern linear to post-exposure log time and no PTS was found.The 163dB level produced a recovery-stop-recovery pattern, showing 13dB threshold shift on the 30th day after exposure.There are no TM perforation in both groups but most of the cochleas showed loss of outer hair cells or reduced activity of succinic dehydrogenase (SDH).
