| This exhibit demonstrates hand-eye rivalry by letting the brain see"
a scene which is contradicted by what it feels through the muscles
of the body. A plastic rod appears to run through the mirror with
two rings hanging on it. Having placed the rings equidistant from
the double-sided mirror, the visitor is instructed to look into
one side while trying to grasp the ring with the hand on the other
side of the mirror. The user has the strange feeling that the hand
is not cooperating with the brain, since only the reflection of
the hand which is not trying to grab the ring is seen.