Hemispheres Of The Brain

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Term Paper Title	Hemispheres Of The Brain
# of Words	1656
# of Pages (250 words per page double spaced)	6.62

Hemispheres of the Brain

Hemispheres of the Brain

     As I was reading the text I came upon a section that I thought to be
quite fascinating.  It talked about people who have a brain that functions like
two different people inside of the brain.  This is of course the Split-Brain
Personality.  As I studied this topic in more detail I found it to be quite
broad and yet very detailed.  I found that I needed a dictionary to be able to
read all of the medical journals and books that are out there, to be able to
understand what it was exactly, that I was reading.  But with a little study and
research I found that this is a precise science that is still largely full of
mysteries.
        The study of hemispheric asymmetry with in the cerebral cortex had long
been a fascination with the human race.  The ancient Aztec cultures used to
perform a type of brain surgery on humans.  This is evident from the human
remains that we find with incisions and piece's missing of the skull.  Whether
or not these primitive surgeries were successful is unknown.  The earliest way
for man to observe the brain was by noticing brain damage to a particular area
of the brain that was damaged.  Such observations were first recorded some 5,000
years ago (Myers,1995).  The most popular case is that of Phineas Gage a
railroad worker that had severe frontal lobe damage.  This happened when a rail
road spike was shot through his head by a piece of dynamite.  Miraculously he
lived through the experience, but with a severe change in his personality.  From
this physiologists learned that personality was largely controlled from this
point namely by removing a persons inhibitions.
        For the most part the brain has been a mystery that is waiting to be
opened.  The last two decades have witnessed a period of research on the human
cerebral functions comparable to the great era of discovery initiated by Broca
in 1861(Young, G,. Segalowitz, S,. Corter, C,. Trehub, S,.1983).  We have leaned
more in the past 20 years about the brain and it's hemispheric asymmetry than we
had learned in combined previous history.(Kosslyn, 1993).  Most of this new work
has been devoted to the study of cerebral functions in adults, but recently
there has been a growing interest in infants and young children most especially
among the study of hand preference.  About 10 percent of the human population in
left-handed(Myers,1995).  By looking at ancient writings this right-hand
preference has seemed to develop right from ...

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