在自闭症谱系障碍的高功能男性成年人中,功能连接和纤维捆绑结构之间的关系发生变化
Qiangli Dong1, Jialong Li2, Yumeng Ju3
1Department of Psychiatry, Lanzhou University Second Hospital, Lanzhou 730000, China.
Brain sciences
|July 29, 2023
概括
自闭症谱系障碍 (ASD) 与大脑电缆的改变有关. 在自闭症患者中,大脑结构和功能之间的关系较弱,特别是在高阶大脑区域,影响临床症状.
科学领域:
- 神经科学是一个神经科学.
- 发育神经科学的发展神经科学.
- 脑部成像 脑部成像
背景情况:
- 自闭症谱系障碍 (ASD) 涉及大脑结构和功能异常.
- 对于ASD对白质微观结构和功能连接 (FC) 之间的关系的影响尚不清楚.
研究的目的:
- 研究自闭症谱系障碍如何影响纤维捆绑微结构和功能连接之间的关系.
- 探索这些结构功能关系对ASD临床症状的预测价值.
主要方法:
- 利用基于fixel的分析,对ASD成年人和典型的发展对照 (TDC) 的结构和功能MRI数据进行分析.
- 采用多线性模型,从纤维通道的微结构信息中预测功能连接 (FC).
- 从ABIDE数据库 (BNI数据集) 分析的数据.
主要成果:
- 在ASD和TDC组中,结构功能关系在初级皮质中是对齐的,但在高阶皮质中脱.
- 与TDCs相比,ASD患者在皮层中显示结构功能关系减少.
- 在ASD中,干扰主要是由改变的FC驱动的,而不是微观结构的变化.
- 特定的结构功能关系预测了ASD的临床症状严重程度.
结论:
- 纤维束微结构和功能连接之间的改变关系在ASD的病因学中很重要.
- 这些发现强调了大脑连接中断在理解ASD方面的重要性.
- 该研究确定了特定的大脑区域,其中结构功能关系与ASD症状严重程度相关.
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