I came across a couple of articles about how we learn using errors and how that translates into motor control. As a practitioner of a movement systems, you’d probably find these interesting, if not valuable.
Errors foster faster learning http://www.hopkinsmedicine.org/news/media/releases/memories_of_errors_foster_faster_learning
How the brain tells magnitude errors
http://www.upenn.edu/pennnews/news/penn-research-shows-how-brain-can-tell-magnitude-errors