Is Cognitive Training the Answer for Dementia? Mercola
They used the Posit-Science program which founder of Vitamin D Life has been using for over 10 years.
It is far better than the competition.
You can try about 30% of it for free on the web.
Includes a 2013 video interview of Dr/ Merzenich discussing Brain Plasticity
See also Vitamin D Life
Off topic: Brain Plasticity (best way to exercise your brain) – Interview Dec 2012
References include
- Speed of processing training results in lower risk of dementia Nov 2017
 Download the PDF from Vitamin D Life