Collaborative Research: Coordination and Adaptability of Rapid Motor Synergies

小行星9411503 快速动作似乎是“刻板印象”，但高速录像 显示出显著的变异性， 刻板的行为 快速动作通常由以下部分组成： 若干单独 模式 的 肌肉协调 称为 “运动协同效应。“例如，青蛙快速捕捉蠕虫的动作，不到1/6秒，是由“弓步协同”（跳向蠕虫）和“下巴-舌头协同”（下巴张开，舌头伸出击中蠕虫，舌头缩回将蠕虫带入口中，下巴关闭）组成的。这项研究旨在了解大脑如何协调多种协同作用，以及在行为后期发生的协同作用如何使用反馈来补偿行为早期发生的协同作用的不准确性。这项研究将包括通过高速录像对行为进行分析，并记录控制行为的肌肉以及控制肌肉的大脑和脊髓部分的信号。 这些研究者已经完成的研究表明，这两种协同作用是可变的，舌头的投射可以补偿弓步中的不准确。从研究中收集的数据将用于快速运动的适应性和协调性的神经网络建模。这项研究的结果可以为大脑控制快速肢体运动和控制机器人提供新的见解。

9411503 Arbib Fast movements appear to be "stereotyped," yet high speed videotaping reveals significant variability in stereotyped behaviors. Fast movements are usually composed of several separate patterns of muscle coordination called "motor synergies." For example, the rapid movements of a frog snapping at a worm, which take less than 1/6th of a second, is composed of a "lunge synergy" (jumping towards the worm) together with the "jaw-tongue synergy" (the jaw opens, the tongue projects to hit the worm, the tongue retracts bringing the worm into the mouth and the jaw closes). This study is designed to understand how the brain coordinates multiple synergies, and how synergies that occur later in the behavior use feedback to compensate for inaccuracies of synergies that occur earlier in the behavior. The study will involve analysis of the behavior by high speed video taping, and recording of signals from the muscles controlling the behavior and the parts of the brain and spinal cord controlling the muscles. Studies already done by these investigators show that both synergies are variable, and that tongue projection can compensate for inaccuracy in the lunge. Data collected from the study will be used in neural network modeling of adaptability and coordination of rapid movements. The results of this study could provide new insights into the control of rapid limb movements by the brain and control of robots.