Thoughts on Perception and Brain Capacity

Idea:

              if  (0)
our brains don't operate at anywhere near their full capacity

              and  (1)
the organs we use to perceive sensation are independent/different than the perception (of the brain) itself

              and  (2)
as we get older, the organs we use to perceive sensation get more and more dull (eyesight, hearing, etc...)

              then
maybe the brain can increase its capacity (0) for perception as we get older in order to compensate for (1) the reduction in "sharpness" (2) of our perceptive organs.


Obviously, this becomes interesting when you try to increase brain capacity for perception before your sensory organs go dull. (here I'm inspired by texts on Da Vinci's ideas on sensazione).

sight, hearing, touch, smell, taste, increased awareness, 6th sense?