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短暂的延迟对接抑制在同位指绑架过程中因负载类型而异

Kangjing Yang¹, Tatsunori Watanabe², Takayuki Horinouchi^3,4

¹Department of Sensorimotor Neuroscience, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-Ku, Hiroshima, 734-8553, Japan.

Journal of physiological anthropology

|February 24, 2026

概括

在静态肌肉收缩任务之间,感觉运动集成有所不同. 与施加恒定的力相比,保持姿势减少了短延迟的 afferent 抑制 (SAI) 和增加了反射反应.

科学领域:

神经科学是一个神经科学.
发动机控制器的控制器
人体生理学人体生理学

背景情况:

静态肌肉收缩呈现出不同的负荷类型:位置任务 (持有肢体位置与惯性负荷相对应) 和力任务 (对约束力施加力).
自身感知信息对于位置任务至关重要,但这些任务之间的感觉运动集成差异仍然不清楚.

研究的目的:

调查力和位置静态收缩任务之间的传感运动集成的差异,特别是短延迟附带抑制 (SAI) 和异名反射反应.
阐明神经系统如何根据静态肌肉收缩过程中的不同负载类型适应感觉运动处理.

主要方法:

十六名参与者在两个条件下进行了第一个背部骨肌 (FDI) 的静态收缩:强力任务 (10%的MVC与刚性约束) 和位置任务 (维持20°绑架与10%的MVC负荷).
短延迟附带抑制 (SAI) 用对联中枢神经电刺激和TMS在运动皮层上测量.
从FDI肌肉中记录了异名的短时间和长时间潜伏反射 (SLR和LLR),并在任务之间进行了比较.

主要成果:

与力量任务相比,在位置任务期间,短延迟附带抑制 (SAI) 显著减弱.
短延迟反射 (SLR) 和长延迟反射 (LLR) 在位置任务中显示出明显更大的幅度.

结论:

这些发现表明,根据静态肌肉收缩过程中遇到的负载类型,采用了不同的感觉运动处理策略.
这表明,中央神经系统根据任务是否需要保持特定的肢体位置或施加特定的力量来调节参与运动控制的神经通路.

关键词:

异名的长时间潜伏反射.不同名的短延迟反射反应.主要运动皮层主要是运动皮层.传感器-运动器集成.短延迟的 afferent 抑制是短延迟的

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