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脊髓超声波刺激在人类中调节皮质脊髓刺激能力
1Program of Motor Neuroscience, Department of Kinesiology & Sport Management, Texas A&M University, College Station, TX, 77843, USA.
Brain stimulation
|May 25, 2025
概括
脊髓超声刺激 (SCUS) 有效调节皮质脊髓刺激能力,显著抑制在高强度和脉冲重复频率下观察到的运动唤起的潜能. 这种非侵入性技术对人类脊柱电路的有针对性的神经调节具有前景.
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
- 神经调节是一种神经调节.
背景情况:
- 低强度聚焦超声波 (LIFU) 提供与深层组织透的非侵入性神经调节.
- 它在人类脊髓中的应用仍然在很大程度上未被探索.
- 研究脊髓超声波刺激 (SCUS) 对神经活动的影响至关重要.
研究的目的:
- 为了研究SCUS对皮质脊髓刺激性的影响.
- 为了确定声学参数的影响:空间峰值脉冲平均强度 (ISPPA),工作周期 (DC) 和脉冲重复频率 (PRF).
主要方法:
- 两项实验涉及62名健康成年人,通过不同强度 (2.5对10W/cm2),DC (10%对30%) 和PRF (500对1000Hz) 来评估SCUS效应.
- 刺激与跨磁性刺激 (TMS) 相同时进行,记录手部肌肉的运动唤起潜力 (MEP).
- 使用不同的TMS线圈方向和肌肉 (FDI,ADM,双臂) 评估了特异性.
主要成果:
- 在高强度 (10W/cm2) 和高PRF (1000Hz) 时,SCUS显著抑制了MEP振幅,而不管DC.
- 在较低强度或PRF时没有观察到显著的影响.
- 抑制作用在TMS方向和C8-内化肌肉中是一致的,但在双臂肌中没有,证实了C8-向的特异性.
结论:
- 脊髓超声波刺激以特定参数的方式调节皮质脊髓刺激能力.
- 对欧洲议员的镇压主要是在高强度和高PRF条件下实现的.
- SCUS是一种有前途的非侵入性技术,用于针对人类脊髓神经回路的神经调节.
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