Adler H J
Kresge Hearing Research Institute, Ann Arbor, MI 48109-0648, USA.
Audiol Neurootol. 1996 Mar-Apr;1(2):65-79. doi: 10.1159/000259186.
Adult quail were exposed one, two or three times to an intense octave band noise. Birds were sacrificed 0 or 14 days after the last exposure and their ears processed for scanning electron microscopy (SEM). SEM observations demonstrated a patch lesion in every ear at 0 and 14 days after exposure. In the single-exposed ear immediately after noise, the lesion lacked any tectorial membrane (TM). At 14 days of recovery, the site of injury was covered by a partially regenerated TM (referred to as the honeycomb). However, the patterns of TM damage and repair varied among the twice- and thrice-exposed papillae. At 0 days after exposure, the multiple-exposed ear displayed a lesion with two segments. In one portion the TM was missing, and in the other portion the TM was present as one or two honeycomb layers. Fourteen days later, a new honeycomb was observed underneath the remaining honeycomb. These results suggest that the quail is able to repeatedly repair its TM following multiple noise exposures.
成年鹌鹑一次、两次或三次暴露于高强度倍频带噪声中。在最后一次暴露后0天或14天处死鸟类，并对其耳朵进行扫描电子显微镜（SEM）处理。SEM观察显示，暴露后0天和14天，每只耳朵都有一处斑块病变。在噪声暴露后立即观察单次暴露的耳朵，病变处没有任何盖膜（TM）。在恢复14天后，损伤部位被部分再生的TM（称为蜂窝状）覆盖。然而，两次和三次暴露的乳头中TM损伤和修复的模式各不相同。暴露后0天，多次暴露的耳朵出现有两个节段的病变。在一部分中TM缺失，而在另一部分中TM以一层或两层蜂窝状存在。14天后，在剩余的蜂窝状结构下方观察到一个新的蜂窝状结构。这些结果表明，鹌鹑在多次噪声暴露后能够反复修复其TM。
