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Updated: Sep 17, 2025

A Free-breathing fMRI Method to Study Human Olfactory Function

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Published on: July 30, 2017

在COVID-19患者的嗅觉刺激时,对神经动力学进行比较EEG研究

Mariia Chernykh¹, Ihor Zyma¹, Bohdan Vodianyk^2,3

¹Department of Physiology and Anatomy, Educational and Scientific Center "Institute of Biology and Medicine", Taras Shevchenko National University of Kyiv, Kyiv, Ukraine.

Frontiers in human neuroscience

|July 3, 2025

概括

严重的COVID-19幸存者表现出刚性大脑动态,与恢复过来的个人或对照不同. 这项脑电图研究强调了感染后潜在的神经动力学变化,表明大脑功能发生了变化.

科学领域:

神经科学是一个神经科学.
传染病研究传染病研究
医疗成像医学成像

背景情况:

在COVID-19之后,认知障碍很常见,但潜在的神经机制尚不清楚.
脑电图 (EEG) 可以揭示大脑活动模式.
感官刺激可以探测神经反应.

研究的目的:

为了研究患有严重COVID-19的个体的皮质神经动力学,恢复COVID-19,和健康的对照.
在休息和感官刺激期间评估EEG反应.
探索功率光谱密度 (PSD) 和移动平均值 (DMA) 分析的实用性.

主要方法:

对三个组进行了EEG记录:严重的COVID-19 (S组),中度的COVID-19恢复 (M组) 和健康的对照 (H组).
记录是在休息时和暴露于氨,异酸和山松气味的过程中进行的.
PSD和DMA分析了量化的光谱功率和时间相关性.

主要成果:

组S显示了升高的β频段PSD和α缩放指数,表明刚性,过度刺激的大脑动态.
组M在振荡模式中出现了一些恢复,但缺乏显著的刺激驱动调节.
健康对照组 (H组) 具有典型的EEG反应,嗅觉反应性最小.

结论:

COVID-19影响皮质神经动力学,严重病例表现出持续的刚性.
DMA是分析EEG数据和理解COVID后大脑变化的宝贵工具.
需要对认知测量进行进一步的研究,以验证EEG生物标志物对大脑功能的有效性.

关键词:

在 COVID-19 疫情中,认知障碍是一种认知障碍.不确定移动平均线.电脑脑电图 (EEG) 是一种电脑电图.嗅觉嗅觉是一种嗅觉.功率频谱密度功率频谱密度

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