背后根反射的特征,由通过皮肤进行的脊柱刺激引起,脉冲持续时间不同,脉冲持续时间不同
Elizabeth A Gordineer1,2, Dobrivoje S Stokic2, Matthias J Krenn2,3
1Program in Neuroscience, School of Graduate Studies in the Health Sciences, University of Mississippi Medical Center, Jackson, Mississippi, United States.
Journal of neurophysiology
|December 1, 2025
概括
脉冲持续时间显著影响后部根反射强度,但不会影响腿部肌肉的平原幅度. 这些发现有助于优化用于脊髓刺激的电神经调节参数.
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
- 发动机控制器的控制器
背景情况:
- 通过穿皮脊柱刺激 (TSS) 的后部根反射评估脊柱刺激性并指导神经调节.
- 脉冲持续时间对这些反射的影响仍未得到充分研究.
研究的目的:
- 在不同脉冲持续时间 (502,000μs) 中系统地描述后部根反射.
- 评估可重复性,并比较单极与双极的TSS配置.
主要方法:
- 12名健康的参与者接受了单极性腰部神经TSS.
- 分析了8个脉冲持续时间的刺激强度和反射特征.
- 在一个子组中评估了可重复性和配置差异.
主要成果:
- 招募曲线显示了类似的平原幅度,但随着脉冲持续时间的变化,强度发生了变化.
- 强度-持续曲线因刺激强度而异 (动力值与90%的平原).
- 发作的延迟时间随着脉冲持续时间的增加而增加;配对脉冲抑制显示了最小的持续时间依赖.
结论:
- 调整刺激强度允许在广泛的脉冲持续时间范围内进行后部根反射.
- 强度-持续时间参数是TSS设置的特征,与外围神经H反射不同.
- 结果为选择TSS参数提供了一个框架,并突出了单极配置的可靠性.
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