在一项随机对照试验中评估白质可塑性,该试验针对学龄前儿童的早期识字训练
Sendy Caffarra1,2, Iliana I Karipidis3,4,5, John Kruper6,7
1Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.
PloS one
|March 19, 2025
概括
两周的字母培训提高了学龄前儿童的阅读技能,包括字母知识和解码. 然而,这种短期阅读干预并没有导致白质大脑结构的显著变化.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 认知科学 认知科学
背景情况:
- 阅读能力显著影响大脑功能,但它对大脑结构的影响,特别是在早期发育阶段,不太清楚.
- 之前的研究主要集中在阅读学习期间的功能性大脑变化,而结构性变化尚未得到充分探索.
研究的目的:
- 调查一项专注阅读培训计划对学龄前儿童行为和白质结构变化的短期因果影响.
- 为了比较以字母为重点的培训计划与以语言理解为重点的程序对阅读相关技能和大脑结构的影响.
主要方法:
- 一项随机对照试验,涉及48名学龄前儿童 (年龄为4岁10岁至6岁2岁),他们被分配到字母培训或语言培训组.
- 对字母知识和解码技能的行为评估,以及扩散磁共振成像 (dMRI) 以测量关键路径中的白质完整性 (分数无异性和平均扩散性).
- 在为期两周的培训干预之前和之后进行纵向数据收集,以评估变化.
主要成果:
- 在两周的干预后,信件培训组在信件知识和解码技能方面表现出显著的改善.
- 在两组中都没有观察到白质路径的统计学意义上的变化,包括左侧弧形和左下纵向.
- 在扩散MRI测量中,高扫描-重新扫描可靠性表明了成像技术的灵敏性.
结论:
- 一个简短的,为期两周的阅读培训计划可以有效地提高学龄前儿童的基本阅读能力,如字母知识和解码.
- 儿童早期的短期阅读干预可能不会导致与阅读相关的主要白质道的扩散特性发生可测量的变化.
- 诸如年龄,训练持续时间和个人的认知特征等因素可能会影响白质的可塑性,以应对阅读能力.
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