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首页> 外文期刊>Biological Psychology >Detecting violations of temporal regularities in waking and sleeping two-month-old infants
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Detecting violations of temporal regularities in waking and sleeping two-month-old infants

机译：发现在两个月大的婴儿中醒来和入睡时违反时间规律的情况

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Correctly processing rapid sequences of sounds is essential for developmental milestones, such as language acquisition. We investigated the sensitivity of two-month-old infants to violations of a temporal regularity, by recording event-related brain potentials (ERPs) in an auditory oddball paradigm from 36 waking and 40 sleeping infants. Standard tones were presented at a regular 300 ms inter-stimulus interval (IS!). One deviant, otherwise identical to the standard, was preceded by a 100 ms ISI. Two other deviants, presented with the standard ISI, differed from the standard in their spectral makeup. We found significant differences between ERP responses elicited by the standard and each of the deviant sounds. The results suggest that the ability to extract both temporal and spectral regularities from a sound sequence is already functional within the first few months of life. The scalp distribution of all three deviant-stimulus responses was influenced by the infants' state of alertness. (C) 2012 Elsevier B.V. All rights reserved.
机译：正确处理声音的快速序列对于诸如语言习得之类的发展里程碑至关重要。我们通过记录来自36个清醒和40个睡眠婴儿的听觉奇异球范例中的事件相关脑电势（ERP），调查了两个月大的婴儿对违反时间规律的敏感性。以固定的300毫秒激励间隔（IS！）呈现标准音调。一个偏差（否则与标准相同）之前是100 ms ISI。标准ISI提出的另外两个偏差与标准在光谱组成上有所不同。我们发现标准引发的ERP响应与每种异常声音之间存在显着差异。结果表明，从声音序列中提取时间和频谱规律性的能力在生命的最初几个月内已经起作用。所有三个异常刺激反应的头皮分布都受到婴儿警觉状态的影响。 （C）2012 Elsevier B.V.保留所有权利。

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