阅读注意力关系:在患有阅读障碍和不患有阅读障碍的儿童中,在单词解读过程中,工作记忆网络活动的变化
Niki Sinha1, C Nikki Arrington2, Jeffrey G Malins3
1Department of Child and Youth Studies, Brock University, St. Catharines, ON, L2S 3A1, Canada.
Neuropsychologia
|February 10, 2024
概括
与对照组相比,患有发育性阅读障碍 (DD) 的儿童在阅读任务时表现出不同的工作记忆 (WM) 网络活动. 这表明WM网络差异可能是DD的阅读困难的基础.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 发展心理学 发展心理学
背景情况:
- 工作记忆 (WM) 对于阅读理解至关重要.
- 新出现的证据表明,WM也会影响基本的阅读技能.
- 很少有研究直接调查了在阅读任务期间在发育性阅读障碍症 (DD) 中的WM网络招募.
研究的目的:
- 检查在患有或没有发育性阅读障碍 (DD) 的儿童中单词阅读期间的工作记忆 (WM) 网络激活.
- 在DD和对照组中,比较WM网络在不同的刺激类型 (熟悉的单词,伪词,假字体) 中的招聘情况.
主要方法:
- 功能磁共振成像 (fMRI) 用于评估77名DD儿童和22名对照儿童的WM网络活动.
- 参与者完成了一项1-back奇怪任务,使用熟悉的单词,伪词和虚假字体.
- 对WM网络的预定义区域进行了激活差异分析.
主要成果:
- 患有DD的儿童表现出对所有刺激的双边WM区域招募.
- 对照儿童仅对伪词表示左侧化WM招募.
- 在错误字体和熟悉词条件下观察到WM激活的群体差异,这是由于DD组右半球活动增加所致.
结论:
- 这些发现表明,在患有发育性阅读障碍 (DD) 的儿童中,非典型的工作记忆 (WM) 网络参与.
- 在DD中右半球WM活动增加可能反映了低效的解码和词识别策略.
- 这项研究强调了WM网络在DD的病理生理学中的作用.
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