Hemispheres Of The Brain :: essays research papers

Hemispheres of the BrainAs I was reading the text I came upon a arm that I thought to bequite fascinating. It talked about people who have a hit that functions liketwo different people inside of the brain. This is of division the Split-BrainPersonality. As I studied this topic in more detail I found it to be quitebroad and yet very detailed. I found that I needed a dictionary to be able toread all of the medical journals and books that are out there, to be able to take in what it was exactly, that I was reading. But with a little make andresearch I found that this is a precise science that is still largely full ofmysteries.The study of hemispheric asymmetry with in the cerebral cortex had longbeen a fascination with the military man race. The ancient Aztec cultures used toperform a type of brain surgery on humans. This is evident from the humanremains that we find with incisions and pieces missing of the skull. Whetheror not these primitive surgeries were successful is unknown . The earliest wayfor man to learn the brain was by noticing brain damage to a particular areaof the brain that was damaged. Such observations were first recorded some 5,000years ago (Myers,1995). The most(prenominal) popular case is that of Phineas Gage arailroad worker that had severe frontal lobe damage. This happened when a railroad spike was shot through his head teacher by a piece of dynamite. Miraculously helived through the experience, but with a severe change in his personality. Fromthis physiologists learned that personality was largely controlled from this window pane namely by removing a persons inhibitions.For the most part the brain has been a mystery that is waiting to beopened. The last two decades have witnessed a plosive speech sound of research on the humancerebral functions comparable to the great era of discovery initiated by Brocain 1861(Young, G,. Segalowitz, S,. Corter, C,. Trehub, S,.1983). We have leanedmore in the past 20 years about the brain and its hemispheric asymmetry than wehad learned in combined previous history.(Kosslyn, 1993). Most of this new workhas been devoted to the study of cerebral functions in adults, but recentlythere has been a growing interest in infants and young children most especiallyamong the study of hand preference. About 10 percent of the human population inleft-handed(Myers,1995). By looking at ancient writings this right-handpreference has seemed to develop right from the start of the human race. Italso is apparent that from ultrasound devises that about 9 in 10 fetuses suck