在耐火性患者的迷走神经刺激后,大脑功能连接和网络特征发生变化
Yongqiang Ding1, Kunlin Guo2, Xinjun Wang1
1Department of Neurosurgery, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
Translational neuroscience
|September 18, 2023
概括
神经刺激 (VNS) 在发作期间显著改变大脑网络连接和小世界指标. 这项研究提供了客观的措施来评估VNS治疗在患者的有效性.
科学领域:
- 神经科学是一个神经科学.
- 的研究研究.
- 大脑网络分析 脑网络分析
背景情况:
- 耐药性在治疗中带来了重大挑战.
- 阴道神经刺激 (VNS) 是一种已确立的治疗药物耐药性的疗法.
- 了解VNS在期间对大脑网络动态的影响至关重要.
研究的目的:
- 研究VNS对大脑功能网络连接的影响.
- 分析VNS之后的扣押期内小世界网络指标的变化.
- 确定用于VNS有效性评估的客观指标.
主要方法:
- 分析了VNS前后10名耐药患者的脑电图 (EEG) 数据.
- 处理了两分钟的ictalEEG段,以计算加权阶段滞后指数 (wPLI) 和小世界指标.
- 通过对不同频段进行错误发现率校正的统计分析.
主要成果:
- 在整个频段中,VNS显著增加了wPLI和增强了小世界网络组织 (增加程度,聚类系数,全球效率;减少特征路径长度).
- 特定频段分析显示了改变的wPLI模式,delta/beta频段加强,β/gamma频段减少.
- 低频带 (<13 Hz) 显示网络效率增加,而马波段显示VNS后效率下降.
结论:
- 在发作期间,VNS治疗明显改变了大脑网络连接和小世界属性.
- 观察到的变化表明VNS调节网络组织,以提高某些频段的效率.
- 这些发现为VNS机制提供了宝贵的见解,并提供了治疗疗效的客观生物标志物.
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