Biological Coordinates of Post stroke Fatigue

The second sentence in here was where they should have focused all their research.
Fatigue is a common and disabling consequence of stroke. Its mechanisms are unknown.

Its so simple, if you don't know why its occurring you can't correct the problem. Doesn't anyone know simple science protocols?

https://docs.google.com/file/d/0B8UKJBVvGwt2cEtvUkFWekRRQUtoY1hQMTVTY0QtQQ/edit