Left hemisphere EEG coherence in infancy predicts infant declarative pointing and preschool epistemic language
Left hemisphere EEG coherence in infancy predicts infant declarative pointing and preschool epistemic language
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DOI：
10.1080/17470919.2015.1024887
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发表时间：
2016-01-02
影响因子：
2
通讯作者：
Sodian, B.
中科院分区：
文献类型：
--
作者：
Kuehn-Popp, N.;Kristen, S.;Sodian, B.
手势在言语前交流中起着核心作用。命令式手势的目的是影响他人的行为，而声明式手势的目的是传达认知信息和分享对一个对象的兴趣。此外，后者被假设为认识论语言的先导能力。到目前为止，人们对它们潜在的大脑成熟过程知之甚少。因此，本研究调查了N=32名婴儿脑成熟过程与命令性动机和陈述性动机以及认知语言的产生之间的关系。14个月时测量脑电图连贯性评分，15个月时测量命令式和陈述性点生成，48个月时测量认知语言。相关分析的结果表明，命令性和陈述性指动的行为和神经模式不同，陈述性指动与左半球的成熟有关。此外，14个月和15个月的左半球脑电图连贯性测量与48个月时认知语言技能的个体差异有关，而与儿童智商无关。在回归分析中，左半球的连贯性测量被证明是认知语言技能最重要的预测指标。因此，左半球的神经过程似乎与社会交流特别相关。
Pointing plays a central role in preverbal communication. While imperative pointing aims at influencing another person's behavior, declarative gestures serve to convey epistemic information and to share interest in an object. Further, the latter are hypothesized to be a precursor ability of epistemic language. So far, little is known about their underlying brain maturation processes. Therefore, the present study investigated the relation between brain maturation processes and the production of imperative and declarative motives as well as epistemic language in N=32 infants. EEG coherence scores were measured at 14months, imperative and declarative point production at 15months and epistemic language at 48months. Results of correlational analyses suggest distinct behavioral and neural patterns for imperative and declarative pointing, with declarative pointing being associated with the maturation of the left hemisphere. Further, EEG coherence measures of the left hemisphere at 14months and declarative pointing at 15months are related to individual differences in epistemic language skills at 48months, independently of child IQ. In regression analyses, coherence measures of the left hemisphere prove to be the most important predictor of epistemic language skills. Thus, neural processes of the left hemisphere seem particularly relevant to social communication.