Developmental differences in the hemodynamic response to changes in lyrics and melodies by 4- and 12-month-old infants
Developmental differences in the hemodynamic response to changes in lyrics and melodies by 4- and 12-month-old infants
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4 个月和 12 个月大的婴儿对歌词和旋律变化的血流动力学反应的发育差异
DOI：
10.1016/j.cognition.2021.104711
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发表时间：
2021
期刊：
影响因子：
3.4
通讯作者：
Mazuka Reiko
中科院分区：
文献类型：
--
作者：
Yamane Naoto;Sato Yutaka;Shimura Yoko;Mazuka Reiko
歌曲和言语在早期照顾者与婴儿的交流互动中起着核心作用，这对婴儿的认知，社会和情感发展至关重要。然而，与语言发展相比，人们对婴儿如何处理歌曲或歌曲如何影响他们的发展知之甚少。歌词和旋律是歌曲的两个关键组成部分，许多关于歌曲处理的研究都考察了歌曲的这两个组成部分是如何处理的。目前的研究重点是歌词和旋律在歌曲感知中的作用，通过使用近红外光谱（NIRS）检查婴儿大脑中歌词和旋律的发展模式和处理方式。研究结果显示，婴儿对歌词和旋律的加工发生了发展性变化，其时间轴与知觉重组相似，即从4.5个月到12个月。我们发现，4.5个月大的婴儿在处理歌词或旋律发生变化的歌曲时表现出右半球优势。相反，12个月大的婴儿在歌词和旋律同时改变时，双侧的激活明显更高。这些结果表明，4.5个月大的婴儿处理歌曲的方式与没有歌词的音乐相同。此外，12个月大的婴儿以互动的方式处理歌词和旋律，这是一种更成熟的处理方法的标志。这些发现突出了研究音乐和语言的独立发展的重要性，也考虑了更广泛的语音和歌曲，歌词和歌曲的旋律，以及语音和音乐之间的关系。
Songs and speech play central roles in early caretaker–infant communicative interactions, which are crucial for infants' cognitive, social, and emotional development. Compared to speech development, however, much less is known about how infants process songs or how songs affect their development. Lyrics and melody are two key components of songs, and much of the research on song processing has examined how the two components of the songs are processed. The current study focused on the roles of lyrics and melody in song perception, by examining developmental patterns and the ways in which lyrics and melody are processed in the infants' brains using near-infrared spectroscopy (NIRS). The results revealed that developmental changes occur in infants' processing of lyrics and melody in a similar timeline as perceptual reorganization, that is, from 4.5 and 12 months of age. We found that 4.5-month-olds showed a right hemispheric advantage in the processing of songs that underwent a change in either lyrics or melodies. Conversely, 12-month-olds showed significantly higher activation bilaterally when lyrics and melody changed at the same time. These results suggest that 4.5-month-olds processed songs in the same manner as music without lyrics. Moreover, 12-month-olds processed lyrics and melody in an interactive manner, a sign of a more mature processing method. These findings highlight the importance of investigating the independent development of music and language, and also considering the relationship between speech and song, lyrics and melody in song, and speech and music more broadly.