Robert Krampf's Experiment of the Week
This week's experiment is one that my Mother-in-law shows me while I was
in
New Zealand. It made the rounds through the internet recently as a
curiosity,
but there is science here too. Several weeks ago, we experimented with
confusing your body's movements by crossing the midline (#358). This
week, we
will use the science of complex systems to confuse your body again. To
try
this, you will need:
your hands and feet
Lift your right foot about 6 inches off the ground. Now start moving
it in
circles, clockwise. As you continue doing that, use your right hand to
draw
a number 6 in the air in front of you. As you do that, you will find
that
your foot has changed directions and is now going counterclockwise.
Now, how did that happen? Although the experiment is easy, it is far
from
simple. It took quite a bit of digging to trace this trick back to
Professor
Haken and the science of Synergetics. This science deals with the ways
that
complex systems work. In a complex system such as your brain and
nervous
system, there are many different signals moving back and forth. Some
of these
signals are treated with more importance than others. Some of the
signals
also become coupled, with one signal guiding the other. That is what
is
happening with your foot and hand. Your hand movement couples with
your foot
movement, but your hand movement is treated with more importance, so
your foot
changes direction.
Even more interesting is that you don't actually have to move your hand.
Try the experiment again, but this time just think about drawing the
number 6 in
the air. Your foot will still reverse. The pattern of your thoughts
still
couples with the movement of your foot. For even more fun, try drawing
a
number 8. Redraw the number over and over in a continuous motion and
you will
find that your foot keeps switching back and forth.
There are several variables in this experiment, so it may not work
exactly
for you the first time. If you find that it does not work well, trying
circling your right foot while drawing the 6 with your left hand. Try
reversing
things, using your left foot and right hand, etc.
Why do your body movements couple? Get up and walk slowly across the
room.
Pay close attention to all the movements involved in walking. Yes,
your
legs move, but so does the rest of your body. You shift your position
slightly
with each step, to keep your balance. What if you had to think
consciously
about the movement of every muscle? Walking would be a very slow and
tedious
process, just as it is for a baby learning to walk. Our bodies quickly
learn to group all those motions into patterns, giving various levels of
importance to each. Soon the patterns are automatic. As your foot
steps forward,
your body shifts to keep your center of gravity over the other foot.
As you
sit down, you lean forward, again to keep your balance. As you open
the
freezer, your hand grasps the ice cream container......
Have a wonder filled week.
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