意识障碍中被破坏的等级组织,由波动-分散偏差揭示出来
Marian Martínez-Marín1, Jakub Vohryzek1, Anira Escrichs1
1Computational Neuroscience Group, Center for Brain and Cognition, Department of Engineering, Universitat Pompeu Fabra, Barcelona, Catalonia, Spain.
bioRxiv : the preprint server for biology
|November 19, 2025
概括
意识障碍 (DoC) 显示大脑层次结构减少,向平衡方向移动. 波动分散定理 (FDT) 偏差量化了这种损失,有助于临床分层.
科学领域:
- 神经科学是一个神经科学.
- 计算精神病学是一种计算精神病学.
- 复杂的系统复杂的系统.
背景情况:
- 在昏迷后评估意识是很困难的.
- 大脑功能层次结构为大脑状态提供生物标志物.
- 意识障碍 (DoC) 涉及改变的大脑动态.
研究的目的:
- 使用非平衡动态来描述DoC中的等级损失.
- 为意识水平开发基于模型的生物标志物.
- 在DoC调查大脑网络中发生的干扰.
主要方法:
- 使用个性化全脑模型,计算了从波动散散定理 (FDT) 的偏差.
- 分析了对照组和DoC患者的fMRI数据 (最小意识状态 (MCS) 和不响应的清醒综合征 (UWS)).
- 在大脑网络中映射特定站点的层次驱动器.
主要成果:
- 比对照组更接近于平衡的DoC大脑动态,随着意识水平的下降.
- 确定了默认模式网络和亚皮质枢纽中的中断.
- 视觉网络层次恢复将MCS与UWS区分开来;边缘区域在两个DoC组中显示了类似的异常.
结论:
- 非平衡的动态意味着有意识的能力.
- FDT偏差是临床分层和监测的原则性,基于模型的层次测量.
- 确定了对意识水平至关重要的特定大脑区域和网络.
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