This video explains how the alpha and gamma motor neurons have to act collectively to avoid muscle spasms.  

 

  The purpose of this video is to begin to explain, or expose, us to how the intervention of functional restoration electrical signals affect movement and function.   An external stimulator, such as the Infrex FRM, provides a new stimulus over and above the input of the brain to affect movement.  Applied properly the external high frequency Biological Frequency helps in healing and re-education.   Muscle spasms occur when alpha and gamma motor neurons are not synchronized.

  After viewing this video go to this video for how muscle spindles prevent injury.