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首页> 外文期刊>Annals of the New York Academy of Sciences >Modeling infants' perceptual narrowing to musical rhythms: neural oscillation and Hebbian plasticity
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Modeling infants' perceptual narrowing to musical rhythms: neural oscillation and Hebbian plasticity

机译:模拟婴儿对音乐节律的知觉缩小:神经振荡和赫比可塑性

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Previous research suggests that infants' perception of musical rhythm is fine-tuned to culture-specific rhythmic structures over the first postnatal year of human life. To date, however, little is known about the neurobiological principles that may underlie this process. In the current study, we used a dynamical systems model featuring neural oscillation and Hebbian plasticity to simulate infants' perceptual learning of culture-specific musical rhythms. First, we demonstrate that oscillatory activity in an untrained network reflects the rhythmic structure of either a Western or a Balkan training rhythm in a veridical fashion. Next, during a period of unsupervised learning, we show that the network learns the rhythmic structure of either a Western or a Balkan training rhythm through the self-organization of network connections. Finally, we demonstrate that the learned connections affect the networks' response to violations to the metrical structure of native and nonnative rhythms, a pattern of findings that mirrors the behavioral data on infants' perceptual narrowing to musical rhythms.
机译:先前的研究表明,在婴儿出生后的第一年,婴儿对音乐节奏的感知就可以根据特定的文化节奏结构进行微调。然而,迄今为止,对于可能构成该过程的神经生物学原理知之甚少。在当前的研究中,我们使用了具有神经振荡和Hebbian可塑性的动力学系统模型来模拟婴儿对特定文化音乐节奏的知觉学习。首先,我们证明未经训练的网络中的振荡活动会以垂直方式反映西方或巴尔干训练节奏的节奏结构。接下来,在一段无监督的学习过程中,我们表明网络通过网络连接的自组织学习了西方或巴尔干训练节奏的节奏结构。最后,我们证明了学习的联系会影响网络对违反自然节奏和非自然节奏的度量结构的反应,这种发现模式反映了关于婴儿感知到音乐节奏变窄的行为数据。

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