在一般性中,周期性空间时间模式的破坏及其基本状态的动态重组
Junxia Chen1, Sisi Jiang1, Guofeng Ye1
1University of Electronic Science and Technology of China, 2006 Xiyuan Avenue, Chengdu, Chengdu, Sichuan Province, 611731, CHINA.
Journal of neural engineering
|September 2, 2025
概括
异常性普遍性 (IGE) 破坏了大脑的默认模式网络 (DMN) 和任务正网络 (TPN) 反相关性. 定期的时空模式分析显示IGE患者的DMN-TPN切换和认知障碍较弱.
科学领域:
- 神经科学
- 病研究
- 大脑网络动态
背景情况:
- 默认模式网络 (DMN) 和任务积极网络 (TPN) 之间的反相关性是健康大脑功能的标志.
- 这种DMN-TPN抗相关性被观察到在特异性泛性 (IGE) 中,并与有关.
研究的目的:
- 使用周期性时空模式 (PSTP) 研究DMN-TPN抗相关性与IGE活动之间的关系.
- 提供有关IGE的神经机制的新见解.
主要方法:
- 分析了健康对照组和IGE患者的休息状态fMRI数据.
- 使用一种新的PSTP检测算法来检测DMN-TPN反相关性波动的动态周期性模式.
- 使用希尔伯特变换和内在神经时间尺度 (INT) 的分析.
主要成果:
- IGE患者的DMN- TPN抗相关性降低,特别是在TPN主导状态时.
- 在IGE患者中观察到更大的动态不稳定性和更频繁的状态转变.
- 在IGE患者的认知区域中,经期长度和INT之间的相关性较低.
结论:
- 在IGE中,DMN和TPN之间的动态切换受损,其特征是相互作用较弱且不太平衡.
- 周期性大脑节律的干扰与IGE的认知缺陷有关.
- PSTP框架提供了对IGE异常大脑节律的时空视角.
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