"To determine the kind of exercises
that would go into the Brain Training software, I conducted a series of
tests to discover which exercises demonstrated a clear increase in
brain activity.
I used an optical topography system,
a device that creates images of the activity in the human brain, to
scientifically verify how the prefrontal cortex can be stimulated while
training with Dr. Kawashima’s Brain Training.
The 3D image produced.
I created a best-fit approximation from data collected from
120 subjects, 20 in their twenties, 20 in their thirties and so on up
to 20 in their seventies. The results of your ‘Brain Age Check’ in Dr.
Kawashima’s Brain Training are calculated using this approximation*."
*Note:
The ‘Brain Age Check‘ has been created to enable you to monitor the
progress of your training when using Dr. Kawashima’s Brain Training
only and for no other purpose.
I used an optical topography system,
a device that creates images of the activity in the human brain, to
scientifically verify how the prefrontal cortex can be stimulated while
training with Dr. Kawashima’s Brain Training. 
The 3D image produced.
