Perceptual chunking in the self-produced songs of Bengalese finches (Lonchura striata var. domestica)
Perceptual chunking in the self-produced songs of Bengalese finches (Lonchura striata var. domestica)
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DOI：
10.1007/s10071-009-0302-4
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发表时间：
2010-05-01
期刊：
影响因子：
2.7
通讯作者：
Okanoya, Kazuo
中科院分区：
文献类型：
--
作者：
Suge, Rie;Okanoya, Kazuo
像人类一样，鸣禽，包括孟加拉雀，在它们的发声中也有等级结构。当人类感知一个句子时，处理发生在短语单元中，而不是单词。在这项研究中，我们调查了鸣禽是否也认为他们的歌曲块（集群的歌曲音符），而不是单一的歌曲音符。我们训练雄性孟加拉雀在Go/NoGo任务中对短暂的噪音做出反应。然后，我们将噪音叠加到他们自己的歌曲录音上，并检查反应时间是否受到短噪音位置的影响，也就是说，噪音是否位于组块之间或组块中间。受试者对组块中间噪声的反应时间显著长于对组块之间噪声的反应时间。然而，当歌曲被反向播放时，没有观察到这种结果。因此，我们得出结论，孟加拉雀认为他们的歌曲块，而不是单一的音符。
Like humans, songbirds, including Bengalese finches, have hierarchical structures in their vocalizations. When humans perceive a sentence, processing occurs in phrase units, not words. In this study, we investigated whether songbirds also perceive their songs by chunks (clusters of song notes) rather than single song notes. We trained male Bengalese finches to react to a short noise in a Go/NoGo task. We then superimposed the noise onto recordings of their own songs and examined whether the reaction time was affected by the location of the short noise, that is, whether the noise was placed between chunks or in the middle of a chunk. The subjects' reaction times to the noise in the middle of a chunk were significantly longer than those to the noise placed between chunks. This result was not observed, however, when the songs were played in reverse. We thus concluded that Bengalese finches perceive their songs by chunks rather than single notes.