What Causes the Brain to Have Slow Processing Speed, and How Can the Rate Be Improved?

What is your neurologist doing to improve yours after a stroke?
ANYTHING AT ALL?
Or do you have a lazy doctor that is not willing to do anything except regurgitate stuff learned in medical school?

http://www.scientificamerican.com/article/what-causes-the-brain-to-have-slow-processing-speed-and-how-can-the-rate-be-improved/