病态神经元在上下过渡时产生波纹,破坏信息传输
Shennan A Weiss1,2,3, Itzhak Fried4, Jerome Engel1,4,5,6,7
1Dept. of Neurology.
medRxiv : the preprint server for health sciences
|August 23, 2023
概括
病理性高频振荡 (pHFO) 是在发作的发作区域中缓慢波的上下过渡过程中产生的. 这些pHFO破坏神经信息传输,可能会影响记忆巩固.
科学领域:
- 神经科学是一个神经科学.
- 发病学 (Epileptology) 是一个专业的学科.
- 睡眠科学 睡眠科学
背景情况:
- 高频振荡 (HFO) 是神经振荡,涉及信息处理和记忆.
- 病理性HFO (pHFO) 与发作发作区 (SOZ) 有关.
- 睡眠期间PHFO的生成和功能作用,特别是关于缓慢波的作用,仍在研究中.
研究的目的:
- 调查在睡眠缓慢波的上下过渡期间产生病态HFO (pHFO),包括波纹和快波纹.
- 为了确定pHFO是否干扰神经信息传输.
主要方法:
- 利用了来自6名患者的同步宏观和微电极记录.
- 确定了睡眠缓慢振荡时期,并分析了叠加的iEEG HFO.
- 检查了在SOZ和非SOZ的慢波过渡期间HFO和相关动作潜力 (AP) 的概率和时间.
- 评估了大脑区域间的状时间相关性.
主要成果:
- 在SOZ中,HFO和HFO相关的AP概率在UP-DOWN过渡期间显著更高 (p<<0.001).
- 相比之下,非SOZ地区在Down-Up过渡期间显示HFO活动的峰值 (p<<0.001).
- 在SOZ中的神经元的一个子集在UP-DOWN过渡时在pHFO期间表现出改变的发射模式,而波纹时间相关性在SOZ中减少.
结论:
- 慢波兴奋性的上下转变有助于病态神经元产生pHFO.
- pHFOs和相关的神经元活动破坏了大脑区域间的时间相关性.
- 这种干扰可能会损害信息传输,并影响内存整合过程.
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