Tracking silence: adjusting vocal production to avoid acoustic interference
Tracking silence: adjusting vocal production to avoid acoustic interference
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DOI：
10.1007/s00359-006-0205-7
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发表时间：
2007-04-01
影响因子：
2.1
通讯作者：
Hauser, Marc D.
中科院分区：
文献类型：
--
作者：
Egnor, S. E. Roian;Wickelgren, Jeanette Graham;Hauser, Marc D.
使用声音信号进行交流的生物体通常会调节其发声以避免被环境中的其他声音掩盖。尽管一些环境噪声是连续的，但生物和非生物噪声都可以是间歇性的，甚至是周期性的。如果将叫声时间安排在沉默期，就可以避免间歇性噪音的干扰，昆虫、两栖动物、鸟类和人类都具有这种能力。令人惊讶的是，我们对非人类灵长类动物的这种基本能力几乎一无所知。在这里，我们展示了一种新世界猴，即棉顶狨猴（Saguinus oedipus），可以将叫声限制在响亮的白噪音中的周期性无声间隔。此外，在这些无声间隔期间产生的呼叫明显比在无声基线会话中记录的呼叫响亮。最后，会话期间的平均通话时长有所下降，这表明暂时模式噪音的经历导致狨猴压缩了它们的通话时间。总而言之，这些结果表明，在存在可预测的间歇性环境噪音的情况下，棉顶狨猴能够改变其叫声的持续时间、时间和幅度，以避免声音干扰。
Organisms that use vocal signals to communicate often modulate their vocalizations to avoid being masked by other sounds in the environment. Although some environmental noise is continuous, both biotic and abiotic noise can be intermittent, or even periodic. Interference from intermittent noise can be avoided if calls are timed to coincide with periods of silence, a capacity that is unambiguously present in insects, amphibians, birds, and humans. Surprisingly, we know virtually nothing about this fundamental capacity in nonhuman primates. Here we show that a New World monkey, the cotton-top tamarin (Saguinus oedipus), can restrict calls to periodic silent intervals in loud white noise. In addition, calls produced during these silent intervals were significantly louder than calls recorded in silent baseline sessions. Finally, average call duration dropped across sessions, indicating that experience with temporally patterned noise caused tamarins to compress their calls. Taken together, these results show that in the presence of a predictable, intermittent environmental noise, cotton-top tamarins are able to modify the duration, timing, and amplitude of their calls to avoid acoustic interference.