将功能性和结构性大脑组织与自闭症行为联系起来:一个多式模式的EU-AIMS纵向欧洲自闭症项目 (LEAP) 研究
Lennart M Oblong1, Alberto Llera2,3, Ting Mei2
1Department of Cognitive Neuroscience, Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen Medical Centre, Kapittelweg 29, 6525 EN, Nijmegen, The Netherlands. lennart.oblong@donders.ru.nl.
Molecular autism
|August 31, 2023
概括
整合大脑结构和功能揭示了自闭症表型. 右状回路中的功能连接是关键的差异化因素,突出了自闭症研究的新途径.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 医疗成像医学成像
背景情况:
- 自闭症谱系障碍 (ASD) 研究通常会单独分析大脑结构和功能.
- 整合多模式神经成像数据可以提高灵敏度,并揭示ASD中大脑组织的新见解.
研究的目的:
- 通过整合结构和功能神经成像数据来识别自闭症中的新型大脑组织现象.
- 研究结构性和功能性大脑特性对自闭症的综合贡献.
主要方法:
- 利用了来自欧盟AIMS纵向欧洲自闭症项目 (LEAP) 的多式核磁共振 (T1,扩散权重,静止状态功能),行为和临床数据.
- 提取了灰色物质密度,概率曲谱连接性和连接图,并使用链接独立组件分析将它们整合起来.
- 采用线性混合效应模型来评估群体差异和关联与行为指标,计算共变量和纵向数据.
主要成果:
- 在一个综合组件中确定了自闭症和非自闭症组之间的显著差异 (p_adj=0.02).
- 这一组成部分主要是由右状回旋 (连接图2) 的功能组织驱动的.
- 虽然观察到名义上的与行为指标的关联,但没有一个在多重比较校正中幸存下来.
结论:
- 功能性大脑表型,特别是功能连接的地形组织,是与自闭症相关的关键驱动因素.
- 这种多模式方法揭示了自闭症特异性的功能连接模式,扩展了之前的单模式研究.
- 研究结果强调了整合结构和功能神经成像对于全面了解自闭症的重要性.
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