邱晶晶, 孙晓燕, 朱衡亚. 基于相位滞后指数探究溶栓后认知损害的脑功能连接重构机制. 2025. biomedRxiv.202508.00017
基于相位滞后指数探究溶栓后认知损害的脑功能连接重构机制
通讯作者: 朱衡亚, zhuhengyaa@163.com
DOI:10.12201/bmr.202508.00017
Reconstruction of Brain Functional Connectivity Underlying Post-Thrombolysis Cognitive Impairment: Insights from Phase Lag Index Analysis
Corresponding author: zhuhengya, zhuhengyaa@163.com
-
摘要:目的?探讨相位滞后指数(Phase Lag Index, PLI)在评估溶栓后脑卒中患者认知损害中的神经机制及临床价值,为卒中后认知障碍的早期电生理标志物探索提供依据。方法?纳入70例rt-PA静脉溶栓后急性脑梗死患者(卒中后认知障碍非痴呆组37例,卒中后痴呆组33例),采集静息态脑电图,基于EEGLab计算α、β、θ、δ4个频段PLI,结合蒙特利尔认知评估(MoCA)及简易精神状态检查(MMSE)结果,比较两组间不同频段及脑区PLI差异,并运用相关分析探讨PLI与认知评分的关联。结果?与卒中后认知障碍非痴呆组相比,卒中后痴呆组额区α频段PLI显著降低(P<0.01),β频段额区连接增强,而额-顶、顶-枕区连接强度显著减弱(P<0.05)。结论?PLI能精准反映溶栓后脑卒中患者的频段特异性功能连接重构,尤其是α/β频段的网络模式变化,具有作为卒中后痴呆早期电生理标志物的潜力。
Abstract: Objective?To investigate the neural mechanisms and clinical utility of the Phase Lag Index (PLI) for assessing cognitive impairment in post-thrombolysis stroke patients, and to identify early electrophysiological biomarkers of post-stroke cognitive dysfunction. Methods?Seventy acute ischemic stroke patients treated with intravenous rt-PA were enrolled and divided by cognitive status into a post-stroke cognitive impairment non-dementia group (PSCIND, n = 37) and a post-stroke dementia group (PSD, n = 33) based on MoCA and MMSE scores. Resting-state EEG was recorded and PLI was computed across four frequency bands (α, β, θ, δ) using EEGLab. Between-group differences in band- and region-specific PLI were compared, and correlations between PLI metrics and cognitive scores were analyzed. Results?Compared with the PSCIND group, the PSD group showed a significant reduction in frontal α-band PLI (P < 0.01), increased β-band connectivity in the frontal region, and marked decreases in frontal-parietal and parietal-occipital network strength (P < 0.05). Conclusion?PLI sensitively captures frequency-specific functional reorganization in post-thrombolysis stroke patients. In particular, α/β-band connectivity patterns hold promise as early electrophysiological markers of post-stroke dementia.
Key words: Phase Lag Index; Post-thrombolysis Cognitive Impairment; Ischemic Stroke; Brain Functional Connectivity提交时间:2025-08-07
版权声明:作者本人独立拥有该论文的版权,预印本系统仅拥有论文的永久保存权利。任何人未经允许不得重复使用。 -
图表
-
周建国. 磁共振成像技术在卒中后认知功能障碍中的临床应用. 2024. doi: 10.12201/bmr.202411.00056
庄旭颉, 高丽丽. 基于NLRP3信号通路探究中医药靶治疗缺血性脑卒中的研究进展. 2025. doi: 10.12201/bmr.202509.00056
朱东胜, 许俊杰, 高扬, 徐云峰, 王宝祥, 胡进. 急性前循环大血管闭塞脑卒中机械取栓术后颅脑CT可逆性缺血性水肿影像因素分析. 2025. doi: 10.12201/bmr.202503.00006
史森中, 张和华, 周超, 魏安海, 兰丽. 基于云端服务的缺血性脑卒中虚拟(VR)体感康复训练平台设计*. 2022. doi: 10.12201/bmr.202211.00008
莫先阳, 郭懿霆, 王楠, 应长江. 血清DAPK1与T-tau蛋白在T2DM认知障碍中的相关性研究. 2025. doi: 10.12201/bmr.202506.00038
许景芬. 老年TyG指数与两年认知功能变化的纵向分析. 2025. doi: 10.12201/bmr.202506.00062
向宪文. 升清益髓开窍针法联合补阳还五汤对缺血性脑卒中患者运动障碍及Hcy的影响. 2025. doi: 10.12201/bmr.202503.00053
金玉香, 张一. 双重任务训练对卒中后认知功能影响的meta分析. 2025. doi: 10.12201/bmr.202502.00002
张丽霞, 郎泽高, 王辉. PD患者SIRT1/NF-κB信号通路与认知功能损害的相关性. 2024. doi: 10.12201/bmr.202412.00077
刘锦, 张婕, 陆育玉, 王鹏俊, 韩剑虹. 炎症反应介导内皮功能障碍及血脑屏障损伤在脑微出血中的作用. 2025. doi: 10.12201/bmr.202504.00045
-
序号 提交日期 编号 操作 1 2025-07-08 bmr.202508.00017V1
下载 -
-
公开评论 匿名评论 仅发给作者
引用格式
访问统计
- 阅读量:164
- 下载量: 0
- 评论数:0