Aberrant spatiotemporal activation profiles associated with math difficulties in children: a magnetic source imaging study.
Aberrant spatiotemporal activation profiles associated with math difficulties in children: a magnetic source imaging study.
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与儿童数学困难相关的异常时空激活曲线：磁源成像研究。
DOI：
10.1037/0894-4105.22.5.571
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发表时间：
2008
期刊：
影响因子：
2.4
通讯作者：
Papanicolaou,AndrewC
中科院分区：
文献类型：
--
作者：
Simos,PanagiotisG;Kanatsouli,Kassiani;Fletcher,JackM;Sarkari,Shirin;Juranek,Jennifer;Cirino,Paul;Passaro,Antony;Papanicolaou,AndrewC
该研究调查了在简单的算术任务中，有数学困难的儿童顶叶、颞叶和额叶皮层激活的相对程度和时间。使用脑磁图测量了数学困难且阅读技能处于平均或高于平均水平的学生（MD组，N = 14）、数学成绩低于平均水平的学生和基础学生的简单加法和数字判断期间的实时大脑活动。阅读测试（MD/RD组，N = 16）和标准化数学测试平均分以上的学生（对照组，N = 25）。与对照组和MD/RD学生相比，MD儿童右半球顶叶下部和上级区域的神经生理活动程度增加。左半球下顶叶区域没有显示出预期的任务相关的变化，并显示出显着的时间延迟活动。MD学生也表现出前额叶皮层的早期参与增加。综上所述，这些发现可能表明，在经历数学困难但阅读表现在正常范围内的学生中，对右半球顶叶（可能还有额叶）网络的依赖性增加，用于简单的数学计算。（PsycInfo数据库记录（c）2016 APA，保留所有权利）
The study investigates the relative degree and timing of cortical activation in parietal, temporal, and frontal regions during simple arithmetic tasks in children who experience math difficulties. Real-time brain activity was measured with magnetoencephalography during simple addition and numerosity judgments in students with math difficulties and average or above average reading skills (MD group, N= 14), students with below average scores on both math and basic reading tests (MD/RD group, N= 16) and students with above average scores on standardized math tests (control group, N= 25). Children with MD showed increased degree of neurophysiological activity in inferior and superior parietal regions in the right hemisphere compared to both controls and MD/RD students. Left hemisphere inferior parietal regions did not show the expected task-related changes and showed activity at a significant temporal delay. MD students also showed increased early engagement of prefrontal cortices. Taken together, these findings may indicate increased reliance on a network of right hemisphere parietal (and possibly frontal areas as well) for simple math calculations in students who experience math difficulties but perform within normal range in reading.(PsycINFO Database Record (c) 2016 APA, all rights reserved)
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