7至9岁儿童语义和语法引导的神经认知发展
Neelima Wagley1, James R Booth2
1Speech and Hearing Science, College of Health Solutions, Arizona State University, Lattie F. Coor Hall, Tempe, AZ, USA; Department of Psychology and Human Development, Peabody College, Vanderbilt University, Nashville, TN, USA.
早期的语言技能预测了儿童的后期大脑活动,特别是在下额三角线 (IFGtri) 中的语法发展. 大脑活动并不能预测后来的语言技能,
科学领域:
- 神经科学
- 发展心理学
- 语言学
背景情况:
- 纵向研究对于理解发育轨迹至关重要.
- 之前的研究探讨了幼儿的语义和语法发展.
研究的目的:
- 研究7至10.5岁儿童的大脑活动与语言 (语义和语法) 之间的纵向关系.
- 确定早期的语言行为是否预测后来的大脑活化,反之亦然.
主要方法:
- 用两个数据收集点进行纵向研究.
- 对语义和语法任务进行分层回归分析.
- 神经成像专注于左半球的语言区域:下额前 (IFGop),下额前 (IFGtri),后额上 (pSTG) 和后额中 (pMTG).
主要成果:
- 早期的语言行为预测了后来的大脑激活,
- 对于IFGtri中的语法引导有强有力的证据.
- 对于pSTG中的语义引导的证据很弱.
- 在IFGop或pMTG中没有语义或语法引导的证据.
结论:
- 语言行为影响神经发育, 支持行为-大脑通路.
- 在IFGtri中,语法发展显示出更强的启动效应.
- 研究结果与强调语义和语法整合的语言理解模式一致.
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