在的皮质中经过脑顶电流刺激的神经效应
Boateng Asamoah1, Ahmad Khatoun1, Maria C Romero2
1Department of Neurosciences, ExpORL, KU Leuven and the Leuven Brain Institute, Leuven, Belgium.
Frontiers in neuroscience
|October 9, 2025
概括
脑后电流刺激 (ECS) 显示出大脑神经调节的前景. 这项研究发现,ECS可以诱导神经活动并增加尖端速率,为某些患者提供潜在的入侵方法替代方案.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
背景情况:
- 超电刺激 (TES) 是安全的,廉价的,但由于头皮转移,它会产生弱脑电场 (E-fields).
- 像深度大脑刺激 (DBS) 和侵袭性皮质刺激 (ICS) 这样的侵入性神经调节是有效的,但成本高且风险高.
- 脑脊电流刺激 (ECS) 通过将电极放置在头骨上,提供了一种新的,不那么侵入性的方法.
研究的目的:
- 研究上电流刺激 (ECS) 对非人类灵长类动物神经活动的影响.
- 为了比较聚焦与非聚焦ECS组合的有效性.
- 探索ECS作为非侵入性TES和侵入性DBS/ICS之间的桥梁的潜力.
主要方法:
- 两只子在头骨上植入了同心环电极,以准头顶皮层的PFG区域.
- 通过使用不同强度 (0.254 mA) 的聚焦或不聚焦的组合,在激发10或40 Hz弦波时记录了神经活动.
- 一个功能性磁共振成像 (fMRI) 实验使用10 Hz的不聚焦刺激进行.
主要成果:
- 电场强度根据安装和刺激强度而异.
- 聚焦和低振幅非聚焦刺激导致神经卷入.
- 高振幅非聚焦刺激增加了尖峰率,模仿了ICS/DBS效应.
- fMRI揭示了分布式的大脑激活模式,这表明网络对ECS的反应.
结论:
- 电脑神经系统可以调节神经活动,诱导引进和增加发射率.
- 对于大脑来说,ECS显示出作为一个独立的神经调节技术的潜力.
- 对于那些对TES无反应但不适合ICS/DBS的患者来说,ECS可能是一个可行的治疗选择.
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