| This exhibit
allows a person to test his/her reaction time to a variety of stimuli
with a very simple device. A stick labeled with time intervals falls
at a random time through the fingers of the subject. At the time
the stick is released, a light goes out (visual stimulus) and a
relay clicks (audio stimulus). The person then tries to grab the
falling stick as quickly as possible. The number on the stick under
the fingers of the person is the reaction time.