“These fractionations appear to be something totally new,” from http://neurosciencenews.com/brain-stroke-disrupts-muscle-synergy/ This is talking about muscle groups. I mentioned something similar to this in http://thoughtfulveg.blogspot.com/2011/04/making-neuropathway.html When I say "I'm "making a new neural pathway", I am." I'm giving the neuroscience behind it. This "something new" is seen in more than movement. In my case you can hear it, also.
This really puts the science behind creating something new and movement, http://thoughtfulveg.blogspot.com/2011/08/neurogenic-therapy.html Movement where there was none? That's "new." This was captivating enough to catch attention, and somebody important helped with http://thoughtfulveg.blogspot.com/2011/10/why-art.html
I do give the neuroscience behind it, and you see it's more than motor neurons. Remember, I didn't talk. I do now. It's not the greatest, but I can be understood. I don't sound as I did before my brain injury. This is definitely something new. Speech is not motor.
Because something "new" is being made, it is important that therapy continue a lot longer than current rehab. Sure there is initial rewiring http://braininjuryknow.blogspot.com/2012/03/what-heck-is-rewiring-brain-anyways.html but something else is going on. This goes back to my original description of the brain as being moldable like clay, yet possessing wondrous properties http://braininjuryknow.blogspot.com/2011/03/wonders-of-silly-putty.html. Some insurances will continue past the initial rehab. Those receiving that are lucky. For the majority, therapy stops when rehab stops.
This "new" thing takes a lot longer than rewiring. It's probably making a new neural pathway where one didn't exist before. Theoretically, the skill will continue to improve as the therapy continues.
*For those with a brain injury and current therapy has stopped: http://braininjuryknow.blogspot.com/2010/12/rehab-at-home.html