_Each
associated mind-and-brain center_ also has direct, distinct nerve
connections _with only one set of muscles_.
In fact, you are "a many-minded, many-bodied" man--a collection of
mental and physical _parts_, a composite man rather than a man unit.
These several parts are in large measure practically _independent_ of
one another. One set of body parts "belongs to" only its particular
associated set of mind parts, or mind center.
[Sidenote: Independent Mind and Body Centers]
If you were constituted otherwise, your life would be very precarious;
for the injury or destruction of even a minor part of your body would be
fatal to the whole unit. As it is, you can lose a finger without
affecting your eye-sight in the least. So you might suffer a localized
brain injury that would completely paralyze a finger, without impairing
your sight at all. Either the mind center that governs a finger, or the
set of muscles in that finger can be affected without necessarily
reacting upon any _other_ mind center or any _other_ set of muscles.
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