Takatoku Nozomi, Fujiwara Motoko
a Department of Human Sciences , Nara Women's University , Japan.
J Mot Behav. 2014;46(1):25-32. doi: 10.1080/00222895.2013.840554. Epub 2013 Oct 28.
The authors investigated the control strategy for changing movement direction during arm movements by analyzing the changes in a triphasic electromyographic pattern. Subjects performed a 40° flexion (basic) and a 40° flexion-extension to return to the start position (return) under two conditions: performing a predetermined task (SF) and performing each task in response to a signal (ST). The results revealed the agonist burst for the return task under the ST condition resembled that of the basic task under the SF condition, and the antagonist burst increased after presenting the modification signal. In conclusion, the strategy for quick change of movement direction was to increase the antagonist burst by an additional command from the central nervous system without cancelling the planned movement.
作者通过分析三相肌电图模式的变化，研究了手臂运动过程中改变运动方向的控制策略。受试者在两种条件下进行了40°屈曲（基本动作）和40°屈伸以回到起始位置（返回动作）：执行预定任务（SF）和根据信号执行每个任务（ST）。结果显示，在ST条件下返回任务的主动肌爆发类似于SF条件下基本任务的主动肌爆发，并且在给出修改信号后拮抗肌爆发增加。总之，快速改变运动方向的策略是通过中枢神经系统的额外指令增加拮抗肌爆发，而不取消计划的运动。
