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亚thalamic区域的神经通路的激活取决于刺激的极性

Seyyed Bahram Borgheai¹, Enrico Opri², Faical Isbaine³

¹Department of Neurology, Emory University, Atlanta, GA 30322, USA.

Brain communications

|February 21, 2025

概括

阴极深度大脑刺激 (DBS) 在帕金森病中通常比阳极DBS更有效,尽管极性单独影响不同的神经通路. 阳极刺激对皮质脊髓管不太有效,但对超直接通路有益.

科学领域:

神经科学是一个神经科学.
生物物理学的生物物理.
神经调节是一种神经调节.

背景情况:

深度大脑刺激 (DBS) 是帕金森病的关键治疗方法,但刺激激活的精确的下丘脑通路仍然不清楚.
了解电刺激的生物物理机制,特别是刺激极性的作用 (阴极与阳极),对于优化DBS治疗至关重要.

研究的目的:

调查和比较帕金森病患者在阴极和阳极深脑刺激 (DBS) 期间治疗相关的脑下通路的激活.
通过检查刺激极性对神经通路激活的差异效应,阐明人类大脑中电刺激的基础生物物理机制.

主要方法:

通过测量15名帕金森病患者的唤起潜力 (EPs) 来量化路径激活,这些患者接受了亚thalamic核 (STN) DBS.
记录了皮层唤起的潜能 (cEP),DBS局部唤起的潜能 (DLEP) 和运动唤起的潜能 (MEP),分别评估超直接通路,STN-GP通路和皮层脊髓/气囊管 (CSBT) 的激活.
构建了招募和强度-持续曲线,以比较不同刺激极性和计算模型的验证结果的途径刺激性.

主要成果:

在STN区域的阴极和阳极刺激激活相同的神经通路,阴极刺激通常更有效.
阳极刺激显示出差异性途径效率:在CSBT中效率最低,在超直接途径中效率更高,在STN-GP途径中与阴极刺激相似.
实验数据证实了生物物理模型的预测,表明刺激极性不同影响轴突,突触和局部神经元,影响途径激活.

结论:

刺激极性显著影响STN DBS期间特定神经通路的招募,为优化治疗效果提供了洞察力.
通过刺激极性的超直接途径的差异激活为其在帕金森病DBS的治疗机制中的潜在作用提供了进一步的证据.
这些发现支持通过考虑极性特异性途径参与来改进DBS编程,以实现个性化和有效的治疗策略.

关键词:

无极性无极性的时间表时间表时间表电皮质谱 (电皮质谱) 是一种电皮质谱.唤起了共振神经活动.超直通路径是一种超直通路径.

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