超越频段:辅助组合-实证-模式-分解-增强微态序列非随机性分析,以帮助诊断和认知预测痴呆症
Wang Wan1,2, Zhongze Gu1, Chung-Kang Peng2,3
1State Key Laboratory of Digital Medical Engineering, School of Biological Science & Medical Engineering, Southeast University, Nanjing 210096, China.
Brain sciences
|May 25, 2024
概括
一个新的指数,微态序列非随机性指数 (MSNRI),分析电脑电图 (EEG) 微态模式. 这个指数可以区分健康个体和痴呆症患者,显示痴呆症导致更多的随机大脑活动.
科学领域:
- 神经科学是一个神经科学.
- 生物物理学的生物物理.
- 数据科学数据科学数据科学
背景情况:
- 在多通道脑电图 (EEG) 中解释时空空间动态模式对于理解痴呆症和认知衰退至关重要.
- 微态分析提供了大脑皮层电场模式的离散近似,这对于描述EEG动态至关重要.
研究的目的:
- 为了引入一个新的微态时空动态指标,微态序列非随机性指数 (MSNRI).
- 评估MSNRI在区分健康对照 (HC) 和前性痴呆症 (FTD) 或阿尔茨海默病 (AD) 患者之间的有效性.
- 评估CEEMD增强的MSNRI在预测认知分数方面的实用性.
主要方法:
- 使用微态分析分析分析了EEG数据,以生成微态过渡模式的序列.
- 基于信息的相似性分析被用来评估这些微态模式的非随机性.
- 整合了补充集体实证模式分解 (CEEMD),以探索特定频率尺度上的微态动态.
主要成果:
- 该MSNRI指标有效地区分HC和FTD (p <0.01) 以及HC和AD (p <0.001).
- 与痴呆症组相比,健康个体表现出更复杂,非随机的时空微状态模式,而痴呆症组显示出更多的随机模式.
- 用CEEMD增强的MSNRI显著提高了迷你精神状态检查 (MMSE) 评分的预测准确性 (R2 = 0.940).
结论:
- 该MSNRI是区分痴呆症和健康认知状态的潜在生物标志物.
- 痴呆症与EEG微态时空动态中的随机性增加有关.
- 经CEEMD改进的MSNRI为分析EEG微状态转换及其与痴呆症认知功能的关系提供了强大的工具.
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