来自《耶鲁大学开放课程：生物医学工程探索 第15集 第15集》

• 
  
  this plateau in depolarization and this recovery.
  这是去极化平台期和恢复期
• 
  
  So,this might be an action potential
  那么 这可能是个动作电位
• 
  
  you'd record from a ventricular muscle cell,
  你可以在心室肌细胞中检测到
• 
  
  and if at the same time you were recording this action potential
  你在记录动作电位的同时
• 
  
  and you were also measuring contraction.
  你也可以检测到细胞收缩
• 
  
  Think of this measurement as how much contraction the cell has done,
  这些检测有多少细胞发生了收缩
• 
  
  at this point in its resting state
  在这时它处于静息状态
• 
  
  and in this point it's in its most contracted state,
  在这时它处于最大收缩状态
• 
  
  then the contraction follows the action potential
  收缩紧随动作电位
• 
  
  by about 100 milliseconds.
  大约间隔100毫秒
• 
  
  As the contraction happens--as the action potential happens
  收缩发生后-- 当动作电位发生后
• 
  
  the contraction happens about 100-150 milliseconds after that,
  大约100-150毫秒 开始收缩