在社交鸟类中对声乐组合的认知约束
Stuart K Watson1,2,3, Joseph G Mine1,3,4, Louis G O'Neill4,5,6
1Department of Comparative Language Science, University of Zurich, Zurich, Switzerland.
iScience
|June 19, 2023
概括
动物的沟通表现出有限的声音重组. 栗子冠者处理两元素的呼叫,但与三元素扎,这表明复杂的组合信号的认知限制,对语言进化至关重要.
科学领域:
- 动物沟通 动物沟通
- 生物声学是一种生物声学.
- 认知科学是一种认知科学.
背景情况:
- 语言依赖于将声音重组成复杂的结构.
- 动物的发声往往会重复使用声音元素,但通常只能在配对中进行.
- 这种有限的组合性可能源于感知认知处理限制.
研究的目的:
- 研究动物处理复杂声学组合的认知极限.
- 测试序列中增加不同声音元素的数量是否会影响处理需求.
- 了解对组合信号复杂性的进化压力.
主要方法:
- 播放实验是用栗子戴冠的语者进行的.
- 测量了对重组与熟悉的双元 (两个不同的声音) 呼叫序列的响应.
- 分析了对重组与熟悉的三元 (三种不同的声音) 呼叫序列的响应.
主要成果:
- 与熟悉的相比,巴布勒对重组的双元素序列表现出了增强的反应 (更快,更长的持续时间).
- 在重组和熟悉的三元素序列之间没有发现显著的响应差异.
- 这表明,当从两个不同的声学元素转移到三个时,会出现处理瓶.
结论:
- 解读复杂的声音序列的认知负载可能会限制动物交流中的组合性.
- 在从双元素序列转移到三元素序列时,处理需求发生了显著的飞跃.
- 克服这些认知约束可能是人类语言中可见的生产性组合的演化必不可少的.
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