Vocal learning beyond imitation: mechanisms of adaptive vocal development in songbirds and human infants.

Vocal learning beyond imitation: mechanisms of adaptive vocal development in songbirds and human infants.
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DOI:
10.1016/j.conb.2014.06.002
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发表时间:
2014-10
影响因子:
5.7
通讯作者:
Marcus G
Marcus G
中科院分区:
医学2区
文献类型:
--
作者:
Tchernichovski O;Marcus G

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鸣禽发声学习的研究通常集中在获得模仿歌曲的感觉模板,以及随后将歌曲产生与模板相匹配的过程。然而,功能性发声发展也需要适应性地偏离感觉模板的能力,以及灵活地组装发声单元的能力。适应性分化的例子包括对异常歌曲的纠正性模仿,以及减少复制过多音节的倾向。这种频率依赖的影响可能反映了群体身份(文化)的同化,同时建立个人和灵活的表达歌曲之间的权衡。有趣的是,尽管鸣禽对声音可塑性的要求各不相同,尤其是在鸟鸣和语言之间,但灵活组合声音的能力在不同物种之间以类似的逐步方式发展。因此,声乐学习的普遍特征远远超出了模仿能力。
Studies of vocal learning in songbirds typically focus on the acquisition of sensory templates for song imitation and on the consequent process of matching song production to templates. However, functional vocal development also requires the capacity to adaptively diverge from sensory templates, and to flexibly assemble vocal units. Examples of adaptive divergence include the corrective imitation of abnormal songs, and the decreased tendency to copy overabundant syllables. Such frequency-dependent effects might mirror tradeoffs between the assimilation of group identity (culture) while establishing individual and flexibly expressive songs. Intriguingly, although the requirements for vocal plasticity vary across songbirds, and more so between birdsong and language, the capacity to flexibly assemble vocal sounds develops in a similar, stepwise manner across species. Therefore, universal features of vocal learning go well beyond the capacity to imitate.
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