SPEED AND CEREBRAL CORRELATES OF SYLLABLE DISCRIMINATION IN INFANTS
SPEED AND CEREBRAL CORRELATES OF SYLLABLE DISCRIMINATION IN INFANTS
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DOI：
10.1038/370292a0
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发表时间：
1994-07-28
期刊：
影响因子：
64.8
通讯作者：
DEHAENE, S
中科院分区：
文献类型：
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作者：
DEHAENELAMBERTZ, G;DEHAENE, S
人类新生儿卓越的语言能力已得到充分证明(1-5)。即使不以母语使用，小婴儿也能辨别音素(2-4)，这种能力在出生后第一年就会退化(4,5)。这种辨别能力的研究方法通常是重复刺激几分钟，直到婴儿习惯某些行为反应，然后检查当刺激改变时反应是否恢复(6)。然而，这种方法并没有揭示婴儿检测语音变化的速度有多快，也没有揭示其中涉及哪些大脑机制。我们在这里描述了三个月大婴儿听第一个辅音在发音位置不同的音节时事件相关电位的高密度记录。两个处理阶段，对应于对听觉输入的日益精细的分析，被识别并定位到颞叶。还观察到额叶对新奇事物的反应迟缓。婴儿大脑在不到 400 毫秒的时间内就能识别出语音变化。
THE remarkable linguistic abilities of human neonates are well documented(1-5). Young infants can discriminate phonemes even if they are not used in their native language(2-4), an ability which regresses during the first year of life(4,5). This ability to discriminate is often studied by repeating a stimulus for several minutes until some behavioural response of the infant habituates, and later examining whether the response recovers when the stimulus is changed(6). This method, however, does not reveal how fast infants can detect phonetic changes, nor what brain mechanisms are involved. We describe here high-density recordings of event-related potentials in three-month-old infants listening to syllables whose first consonants differed in place of articulation Two processing stages, corresponding to an increasingly refined analysis of the auditory input, were identified and localised to the temporal lobes. A late frontal response to novelty was also observed. The infant brain recognizes a phonetic change in less than 400 ms.