For years, researchers blamed muscle tension from tightening in the face, neck and the skin on top of the head.

VOA: special.2010.03.30

The cells that take an electrical signal, which is coming down your nerve and convert it into a muscle contraction work this way, so 'neuro' nerve, muscle junctions act based on ligand-gated ion channels.

依靠相同的工作原理,细胞将来自于神经的,电信号传递到细胞收缩肌中,所以神经和肌肉关节运动,都基于配体门控离子通道

耶鲁公开课 - 生物医学工程探索课程节选

and some things on the bars over at Muscle Beach,

在肌肉海滩玩单双杠，

激情生活 - SpeakingMax英语口语达人

Now,researchers with the Rehabilitation Institute of Chicago are working on another method called TMR, or targeted muscle reinnervation.

VOA: special.2009.03.10

And then deliver those computer signals either to guide the computer cursor on the screen or onto robotic arm to move the arm or perhaps even muscle stimulators to re-animate the paralyzed arm.

然后传递这些计算机信号,操控电脑屏上的光标,或者机器人手臂来活动手臂,或者甚至可能肌肉刺激器来让瘫痪的手臂重新动起来。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

His spinal cord had to be retrained to produce the muscle movements needed to stand and take assisted steps on the treadmill.

VOA: special.2011.06.01