扰乱到达引起了运输和掌握中的预期反应
Anna Akbaş1,2, Mariusz P Furmanek1,2,3, Sarah Hsu1
1Department of Physical Therapy, Movement and Rehabilitation Science, Northeastern University, Boston, MA, United States.
Frontiers in human neuroscience
|November 8, 2024
概括
预测到达-抓取运动期间的手臂干扰会触发到达和抓取组件的普遍肌肉调整. 这种准备性激活使上肢为意外的外力做好了准备.
科学领域:
- 神经科学是一个神经科学.
- 生物力学 生物力学
- 发动机控制器的控制器
背景情况:
- 运动控制研究研究神经系统如何准备和执行运动.
- 预期性调整对于在目标导向行动中保持稳定性和准确性至关重要.
研究的目的:
- 为了确定在达到-抓取过程中预测机械手臂干扰是否会引起预测性调整.
- 评估这些调整是全球性的还是特定方向的.
主要方法:
- 13名健康参与者执行了可预测和部分可预测的手臂干扰的触摸到抓取任务.
- 记录了16个肌肉的电肌图 (EMG) 和上肢运动.
主要成果:
- 预期的干扰导致肌肉活动增加 (三头肌,胸部主要) 和改变的触及动力学 (更高的加速).
- 掌握动力学显示了调整,随着 flexor 和扩展器数字体活动的增加.
- 准备激活是通用的,不特定于扰动方向.
结论:
- 了解即将发生的干扰会在达到和抓取阶段触发预期性肌肉调整.
- 这些准备性反应在上肢中是普遍的,而不是特定于方向的.
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