Skip to main content
. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: Spinal Cord. 2010 Jun 29;49(1):87–93. doi: 10.1038/sc.2010.73

Figure 1.

Figure 1

Measurement of surface EMG signals from the initial recording from a subject with a motor-incomplete C4 injury carried out 3 days post onset (Left), comparing activity observed in relaxation, measurement of noise level, activity of interest, and volitional activation of the Right Vastus Lateralis (RVL) and Soleus (RSOL) muscles. Note that the activity of interest during relaxation develops very little amplitude above noise when only a few motor units are firing (RVL) and is of much lower amplitude than volitional activation.