Hello Doydie,
Yes, as the NCR is part of the EMG. The EMG is almost like an EKG of one's muscle during a NCR if you will. The EMG is a study of the reaction of one's muscles during the NCR. If you would like further explanation, please feel free to email me here on the site. I would be more than happy to explain further to the best of my knowledge. Good luck.

All the best,
Chris