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Crocodiles use both interaural level differences and interaural time differences to locate a sound source
The Journal of the Acoustical Society of America ( IF 2.4 ) Pub Date : 2020-10-05 , DOI: 10.1121/10.0001979
L. Papet 1 , M. Raymond 1 , N. Boyer 1 , N. Mathevon 1 , N. Grimault 2
Affiliation  

To explore how crocodilians locate a sound source, two Nile crocodiles (Crocodylus niloticus) were trained to swim towards an acoustic target. Using filtered versions of synthesized stimuli, the respective roles of interaural level differences (ILDs) and interaural time differences (ITDs), which are the two main cues providing information on sound source position, were tested. This study shows that crocodiles rely on both ILDs and ITDs to locate the spatial direction of a sound source and that their performance is lower when one of the cues is lacking.

中文翻译:

鳄鱼同时使用耳间水平差异和耳间时间差异来定位声源

为了探索鳄鱼如何定位声源,训练了两个尼罗河鳄鱼(Crocodylus niloticus)向着声学目标游泳。使用合成刺激的过滤形式,测试了耳间水平差(ILD)和耳间时间差(ITD)的各自作用,这是提供声源位置信息的两个主要提示。这项研究表明,鳄鱼同时依赖ILD和ITD来定位声源的空间方向,并且当缺少其中一种线索时,它们的性能会降低。
更新日期:2020-10-06
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