Auditory brainstem responses in the Eastern Screech Owl: An estimate of auditory thresholds
Auditory brainstem responses in the Eastern Screech Owl: An estimate of auditory thresholds
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DOI：
10.1121/1.1928767
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发表时间：
2005-07-01
影响因子：
2.4
通讯作者：
Dooling, RJ
中科院分区：
文献类型：
--
作者：
Brittan-Powell, EF;Lohr, B;Dooling, RJ
采用听觉脑干反应（ABR）技术对东部尖吻鸮（Megascops asio）的听觉敏感性进行了研究。典型的尖叫猫头鹰ABR波形显示两个到三个突出的峰值发生在5毫秒的刺激开始。随着声压水平的增加，ABR峰值振幅增加，潜伏期缩短。随着刺激呈现率的增加，ABR峰幅降低，潜伏期延长。一般来说，ABR波形刺激强度和重复率的变化是一致的，在几个鸟类家庭中发现的模式。ABR听力图显示，尖叫猫头鹰在1.5和6.4 kHz之间听到最好，在4-5.7 kHz之间最敏感。的平均尖叫猫头鹰ABR听力图的形状是类似的谷仓猫头鹰的行为测得的听力图的形状，除了在最高频率。我们的数据还显示了尖叫猫头鹰的颜色变体之间的整体听觉灵敏度的差异。(c)2005年美国声学学会。
The auditory brainstem response (ABR), a measure of neural synchrony, was used to estimate auditory sensitivity in the eastern screech owl (Megascops asio). The typical screech owl ABR waveform showed two to three prominent peaks occurring within 5 ms of stimulus onset. As sound pressure levels increased, the ABR peak amplitude increased and latency decreased. With an increasing stimulus presentation rate, ABR peak amplitude decreased and latency increased. Generally, changes in the ABR waveform to stimulus intensity and repetition rate are consistent with the pattern found in several avian families. The ABR audiogram shows that screech owls hear best between 1.5 and 6.4 kHz with the most acute sensitivity between 4-5.7 kHz. The shape of the average screech owl ABR audiogram is similar to the shape of the behaviorally measured audiogram of the barn owl, except at the highest frequencies. Our data also show differences in overall auditory sensitivity between the color morphs of screech owls. (c) 2005 Acoustical Society of America.