Experiment at home All you need is a friend, a freestanding
cardboard screen, and a fake hand. It would be ideal if you had
a rubber hand, such as you might buy at a Halloween store, but
it will also work if you just trace your hnad on a sheet of
blank paper. Lay your real hand on a tabletop a few inches away
from the fake one and align them the same (fingertips pointed
the same direction, palms either both up or both down). Then
place the screen between the two hands so that all you can see
is the false one. While you stare at the fake hand, your
friend's job is to simultaneously stroke both hands at
corresponding points. For example, your friend could stroke both
pinkies fromknuckle to nail at the same speed, then issue three
quick taps from the second joint of both index fingers with the
same timing, then stroke a few light circles on the back of each
hand, and so on. After a short time, areas in your brain where
visual and somatosensory (body sensing) patters come together -
"association areas" become con