创伤后应激障碍中风中前额叶皮层的下部化:一个ENIGMA-PTSD研究
Ahmed Hussain1,2, C Lexi Baird1,2,3, Ashley A Huggins4
1Brain Imaging and Analysis Center, Duke University, Durham, North Carolina.
Biological psychiatry global open science
|February 13, 2026
概括
创伤后应激障碍 (PTSD) 与皮质缩减少有关,特别是在参与恐惧处理的大脑区域. 这可能表明PTSD患者的大脑信号效率发生变化.
科学领域:
- 神经科学是一个神经科学.
- 神经成像是一种神经成像.
- 精神病学是一个精神病学.
背景情况:
- 皮层转化,大脑皮层折叠的形成,对于神经发育至关重要.
- 它与皮质表面积和厚度相关,可能会提高大脑信号效率.
- 虽然在创伤后应激障碍 (PTSD) 中存在大脑结构差异,但很少有研究探讨了它的皮质转化.
研究的目的:
- 调查创伤后应激障碍 (PTSD) 和皮层缩之间的关联.
- 检查PTSD诊断和严重程度如何与大脑各个区域的局部化指数 (lGI) 相关.
- 探索抑郁症,童年创伤,年龄和性别对这种关联的缓解影响.
主要方法:
- 从MRI扫描中使用FreeSurfer的局部化指数 (lGI) 来量化化.
- 通过ENIGMA-PGC联盟,分析了1876名参与者的数据 (789名患有PTSD,1087名对照).
- 采用线性混合效应模型,考虑年龄,性别,表面积,PTSD状态和现场效应.
主要成果:
- 创伤后应激障碍的诊断和严重程度与右侧中间轨道前和正面前带皮层的较低IGI相关.
- 创伤后应激障碍和年龄的相互作用显示,双边面额中额叶皮质的lGI较低.
- 伴并发性PTSD和主要抑郁症与左下和中部皮的较低的lGI有关.
结论:
- 在PTSD中较低的lGI,特别是在腹中前额叶皮质中,表明信号效率受损.
- 创伤后应激障碍可能会加快与年龄相关的面额中额叶皮层缩的衰退.
- 研究结果突出了PTSD中的结构性大脑差异,影响了诸如恐惧学习之类的认知功能.
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