Consonant and Vowel Processing in Word Form Segmentation: An Infant ERP Study.
Consonant and Vowel Processing in Word Form Segmentation: An Infant ERP Study.
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DOI：
10.3390/brainsci8020024
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发表时间：
2018-01-31
期刊：
影响因子：
3.3
通讯作者：
Nazzi T
中科院分区：
文献类型：
--
作者：
Von Holzen K;Nishibayashi LL;Nazzi T
分词技能和辅音优先加工（c偏向）在一岁后半年发展起来，这有助于语言习得。我们使用事件相关脑电位（Event-related brain potential，简称ERPs）研究了早期词形分割的神经基础，以及对起音辅音、中间元音和尾辅音的早期加工，探索这些早期技能的差异如何与后来的语言结果相关。我们对学法语的8个月大的婴儿的研究结果主要支持了之前的研究，即在这个年龄段，单词熟悉度在分词中的作用正在从积极的极性发展到消极的极性。虽然作为一个群体，婴儿表现出前局限性的负面效应，但对个体结果的检查显示，大多数婴儿表现出消极反应（消极响应者），而少数婴儿表现出积极反应（积极响应者）。此外，所有婴儿都表现出对起始辅音错误发音的敏感性，而消极反应者表现出对元音错误发音缺乏敏感性，这一发展模式与之前的文献相似。对尾辅音发音错误的反应既不敏感也不缺乏敏感性。我们发现，与对照词（评估分词技能）和发音错误（评估语音处理）相比，在测试中对新分词表现出更成熟、消极反应的婴儿，在出生后的第二年里，比表现出更积极反应的婴儿在单词生成方面有更大的增长。这些结果建立了早期切分技能与语音加工（不受错误发音类型的调节）和后来的词汇技能之间的关系。
Segmentation skill and the preferential processing of consonants (C-bias) develop during the second half of the first year of life and it has been proposed that these facilitate language acquisition. We used Event-related brain potentials (ERPs) to investigate the neural bases of early word form segmentation, and of the early processing of onset consonants, medial vowels, and coda consonants, exploring how differences in these early skills might be related to later language outcomes. Our results with French-learning eight-month-old infants primarily support previous studies that found that the word familiarity effect in segmentation is developing from a positive to a negative polarity at this age. Although as a group infants exhibited an anterior-localized negative effect, inspection of individual results revealed that a majority of infants showed a negative-going response (Negative Responders), while a minority showed a positive-going response (Positive Responders). Furthermore, all infants demonstrated sensitivity to onset consonant mispronunciations, while Negative Responders demonstrated a lack of sensitivity to vowel mispronunciations, a developmental pattern similar to previous literature. Responses to coda consonant mispronunciations revealed neither sensitivity nor lack of sensitivity. We found that infants showing a more mature, negative response to newly segmented words compared to control words (evaluating segmentation skill) and mispronunciations (evaluating phonological processing) at test also had greater growth in word production over the second year of life than infants showing a more positive response. These results establish a relationship between early segmentation skills and phonological processing (not modulated by the type of mispronunciation) and later lexical skills.
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