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前丘脑辐射的结构完整性预测了视觉编码期间的α振荡和注意力不集中

Joel P Diaz-Fong^1,2,3, James McGough⁴, James T McCracken^4,5

¹Semel Institute for Neuroscience & Human Behavior, Department of Psychiatry & Biobehavioral Science, University of California Los Angeles, 760 Westwood Plaza, Los Angeles, CA, 90024, USA. jpdiaz@ucla.edu.

Scientific reports

|February 19, 2026

概括

前丘脑辐射 (ATR) 中的白质完整性与注意力缺陷/多动症 (ADHD) 儿童在工作记忆任务期间的α脑波活动有关. 这表明了注意力缺陷的基于 thalamus 的机制.

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
生物医学工程生物医学工程

背景情况:

注意缺陷/多动障碍 (ADHD) 的特点是工作记忆缺陷,通常与注意力控制受损有关.
阿尔法振荡 (8-12 Hz) 的异常,特别是与事件相关的阿尔法功率下降 (alpha ERD) 的减少,在ADHD儿童的工作记忆任务中观察到.
在ADHD中这些振荡动态的结构基础在很大程度上是未知的.

研究的目的:

为了探索白质微观结构和阿尔法调制之间的关系,在一个空间工作记忆任务的孩子与ADHD和典型的发展 (TD) 控制.
为了研究特定的白质道 (光学辐射,前面的胸膜辐射,上纵SLF2) 在注意力控制和工作记忆中的作用.
阐明ADHD中神经振荡变化的结构基础.

主要方法:

利用了来自115名儿童的EEG和扩散张力成像 (DTI) 数据 (72名患有多动症,43名TD对照).
使用DTI分析光学辐射 (OR),前面的胸膜辐射 (ATR) 和上纵的第二个分支 (SLF2) 的白质完整性.
在空间工作记忆任务期间,与基于EEG的alpha ERD相关联的DTI衍生白质微结构指标.

主要成果:

与TD对照组相比,扩散张力成像显示ADHD儿童的ATR和SLF2中白质完整性降低 (平均扩散率增加).
ATR的微观结构显著预测了alpha ERD,表明它在编码工作记忆期间调节神经振荡的作用.
SLF2和OR的微观结构与α调制没有显著的关系.

结论:

这些发现支持质介导的α调节模型,其中损害前面质通路的完整性有助于ADHD的注意力障碍.
白质微观结构的破坏,特别是ATR中,与工作记忆期间异常的α振荡有关.
了解这些结构功能联系可能有助于制定针对ADHD执行功能缺陷的有针对性的干预措施.

关键词:

更多关于 ADHD ADHD 的文章阿尔法振荡是指阿尔法振荡.在 DTI 中,DTI 是指DTI.这是一个EEGEEGEEGEEGEEG.没有注意力是不注意的.

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