低频振荡的剂量依赖功率和连接度调制通过跨膜磁刺激在非人类灵长类动物中
bioRxiv : the preprint server for biology
|February 6, 2026
概括
这项研究表明,跨磁刺激 (TMS) 改变了非人类灵长类动物的大脑波功率和连接性. TMS强度影响这些神经变化,为神经调节疗法提供了洞察力.
科学领域:
- 神经科学是一个神经科学.
- 神经调节是一种神经调节.
- 大脑刺激 大脑刺激
背景情况:
- 跨磁刺激 (TMS) 是一种非侵入性技术,用于调节神经活动,经常针对诸如抑郁症等疾病的左侧脊侧前额皮质 (DLPFC).
- 临床试验往往缺乏神经标志物来确定DLPFC与TMS的接触.
- 非侵入性脑电图 (EEG) 在空间分辨率和信号解释上有局限性,用于研究前额振荡.
研究的目的:
- 研究单脉冲TMS对前额叶皮质局部场潜力 (LFP) 和连接性的影响,使用非人类灵长类动物的内EEG.
- 在DLPFC中建立TMS目标参与的神经标记.
主要方法:
- 单脉冲TMS被应用于非人类灵长类动物的左前额皮层.
- 使用内EEG记录了局部场潜力 (LFPs).
- 进行了基于阶段的连接分析,以评估TMS诱导的神经通信的变化.
主要成果:
- 活跃的TMS脉冲,与假的相比,在1-13赫兹范围内的模块化的LFP功率跨越多个大脑区域,包括前额,顶部和部区域.
- 首先,TMS增强了,然后破坏了,最后恢复了刺激地点与其他地区之间的连接.
- 连接的初始增强与TMS强度相扩大,表明剂量依赖的效果.
结论:
- 单脉冲TMS诱导了低频LFPs的剂量依赖调制,并改变了短距离和远距离的神经连接.
- 这些发现为TMS的神经机制及其作为神经调节疗法的潜力提供了关键的见解.
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