I looking in a slightly different direction from your project. We need the residue of the body's signal without the voluntary movement data as we are researching tremors. Of interest is tremors caused by Essential Tremors (ET) and/or Parkinson's.
Resting tremors, and positional tremors have been well studied. Our target is to detect tremors in gestures which is much more difficult. To do this we need to filter out the bodies voluntary movement signal. This signal is in the range from 0Hz to 2Hz. The signal we are interested in is in the range of 3Hz to 20Hz.
We would appreciate hearing from you if you have any insight into possible solutions to this problem.