短肢领航鲸（Globicephala macrorhynchus）的听觉诱发电位。

Auditory evoked potentials in two short-finned pilot whales (Globicephala macrorhynchus).

机构信息

ITT Corporation, 3276 Rosecrans Street, San Diego, California 92110, USA.

出版信息

J Acoust Soc Am. 2011 Feb;129(2):1111-6. doi: 10.1121/1.3531875.

Abstract

The hearing sensitivities of two short-finned pilot whales (Globicephala macrorhynchus) were investigated by measuring auditory evoked potentials generated in response to clicks and sinusoidal amplitude modulated (SAM) tones. The first whale tested, an adult female, was a long-time resident at SeaWorld San Diego with a known health history. Click-evoked responses in this animal were similar to those measured in other echolocating odontocetes. Auditory thresholds were comparable to dolphins of similar age determined with similar evoked potential methods. The region of best sensitivity was near 40 kHz and the upper limit of functional hearing was between 80 and 100 kHz. The second whale tested, a juvenile male, was recently stranded and deemed non-releasable. Click-evoked potentials were not detected in this animal and testing with SAM tones suggested severe hearing loss above 10 kHz.

摘要

通过测量短肢领航鲸（Globicephala macrorhynchus）对 click 和正弦幅度调制（SAM）音调产生的听觉诱发电位，研究了两只短肢领航鲸的听觉灵敏度。第一只接受测试的鲸鱼是一只成年雌性，它是圣地亚哥海洋世界的长期居民，具有已知的健康史。该动物的 click 诱发反应与其他回声定位齿鲸测量的反应相似。用类似的诱发电位方法测定的听觉阈值与类似年龄的海豚相当。最佳敏感区域接近 40 kHz，功能听力上限在 80 到 100 kHz 之间。第二只接受测试的鲸鱼是一只幼年雄性，最近搁浅，被认为无法放生。在这只动物身上没有检测到 click 诱发电位，用 SAM 音调测试表明，其在 10 kHz 以上的听力严重受损。