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Free research essays on topics related to: brain

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  • The Social Brain - 1,429 words
    The ability of humans to learn and retain knowledge is an incredible power source and also a dominant characteristic of the human species. The intricate abilities of the mind allow for humans to learn skills and to have the power to control and dominate the world they live in by means of learned behavior. The two cerebral hemispheres of the left and right specialize in motor and sensory skills which specialize the socialy established beliefs and behaviors unique to humans. In writing The Social Brain Michael Gazzaniga proclaims an understanding of the principle of both the right and left brain hemispheres by examining split brain patients. Gazzaniga believes in cognitive dissidence and studi ...
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  • The Social Brain - 1,422 words
    ... tus were also unique, as he realized the environment could be controlled for personal improvement (Gazzaniga, 149). This was evident in the new nomadic behavior of hunters and gathers as populations behavior become more nomadic As a hominid continued to evolve the Neanderthal played an important role in the changes of brain activity and behavior. The Neanderthals dominant influence of the Wenickes and Broca areas of the brain allowed for the specialization of skill in tool making, shelter, and hunting ability. Neanderthals lived in larger groups thrived off competition and social relations evident in their self adornment with clothing and tools. Neanderthals lived in caves and buried the ...
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  • When The Air Hits Your Brain - 419 words
    This is the book that every neurosurgeon would like to have written his or her version of, but probably hadn't the time. It is the account of a neurosurgeon's training from medical school to the end of residency, in this case in an American training programme in the 1970s and 80s. Although aimed at the public rather than at neurosurgeons, I could not put it down. Of course, I am biased: I am probably much the same age as the author and shared many of his experiences, or at least the British version of them. I recognise the same pressures on junior staff, the same developments in our specialty, and the same types of character, and I could tell as many tales. He even worked for a spell at the ...
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  • The Brain - 1,622 words
    Can you image a hunk of pinkish-gray tissue the size of your hand that is controlling your entire body? This organ in your body is called the brain. The brain is not the largest organ but is the most complex organ in your body. (Metos, 1990, p. 10 ) When you think of the brain do you think of the control center of movement, sleep, hunger, thirst, and virtually every other vital activity necessary to survive? Or do you think of the brain as the organ that controls emotions including, hate, love, fear, sadness, mourning, ect.? I really doubt you would think of that unless you were an anthropologist, a scientist who studies humans? ( Funk & Wagnalls Corporation, 1995, Encarta As a matter of fac ...
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  • I Felt A Funeral In My Brain - 1,012 words
    Life, death,and reincarnation are portrayed in Emily Dickinson's poem "I Felt A Funeral In My Brain." The use of words associated with death gives the poem an ominous and dark karms. To add to this karma, important words that are strong in meaning are capitalized. At the beginning of this poem the feelings of grief and pain are evident. Throughout the rest of the poem, there is a strong sense that the speaker needs to make a choice between a world full of trouble and pain or a heaven that brings solitude and peace. This is all part of a vicious cycle. Sometimes when life doesn't turn out for the best, you need to wait until your cycle is up. This is reflected clearly at the end of the poem. ...
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  • The Human Brain - 1,351 words
    Our brains weigh about three pounds and are divided into two similar looking but functionally different hemisphere, the right hemisphere and the left hemisphere. Both of which are connected by a large bundle of nerves called the corpus collosum. In some people with severe seizure disorders such as epilepsy, it was found that if this bundle of nerves was severed their seizure would either cease or a the very least be better controlled. From this surgical procedure it was discovered that the two hemispheres had different methods of processing information, as well as controlling parts of the body. The left hemisphere controls the right have of the body and the right hemisphere controls the left ...
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  • The Human Brain - 1,065 words
    ... magine, in short it's what makes humans, humans. IN THE FUTURE Today many experiments are being conducted that may be break through's for the future. For instance "brain grafting" is one procedure that may be used in the future. Brain grafting is to transplant a very thin layer of brain skin from one person to another. This would result in control of parkinson's disease and other seizure related diseases. Another radical idea that has already been successfully been tried on rhesus monkey's is, brain transplants. The ethics and legal problems for such a transplant would probably never let this operation be performed on humans. This is because the person would not be the same, would not ha ...
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  • Effects Of Alcohol On The Brain - 981 words
    Almost everyone has tried alcohol at some stage, and many also use it as a regular basis in parties and other special occasions. When a small amount of alcohol is consumed, it stimulates the appetite and makes it easier for people to produce conversations and it also gives relaxation and good feelings. However excessive drinking can cause serious negative effects. Some of the negative effects are that the individual will start to talk loudly, make inappropriate statements, act aggressively and even pass out. The effect of alcohol on the brain is what causes all these noticeable changes in human behavior. Alcohol has the most noticeable effect on the brain. Alcohol acts like a sedative, which ...
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  • Methamphetamine Abuse Linked To Brain Cell Damage - 459 words
    BETHESDA, MD -- March 28, 2000 -- New research shows that those who use methamphetamine, often called "meth" or "speed," risk long-term damage to their brain cells similar to that caused by strokes or Alzheimer's disease. In an article published in the March 28 issue of Neurology, scientists at the Harbor-UCLA Medical Center in Torrance, California, used magnetic resonance spectroscopy to take measurements of three parts of the brains of 26 participants who had used methamphetamine and then compared them with measurements of the same regions in the brains of 24 people who had no history of drug abuse. "While the meth users in this study hadn't used the drug for some time--anywhere from two w ...
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  • Methamphetamine Abuse Linked To Brain Cell Damage - 459 words
    BETHESDA, MD -- March 28, 2000 -- New research shows that those who use methamphetamine, often called "meth" or "speed," risk long-term damage to their brain cells similar to that caused by strokes or Alzheimer's disease. In an article published in the March 28 issue of Neurology, scientists at the Harbor-UCLA Medical Center in Torrance, California, used magnetic resonance spectroscopy to take measurements of three parts of the brains of 26 participants who had used methamphetamine and then compared them with measurements of the same regions in the brains of 24 people who had no history of drug abuse. "While the meth users in this study hadn't used the drug for some time--anywhere from two w ...
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  • Research Essay On Brain And Head Injuries - 944 words
    Head and brain injuries occur when you least expect them to. The seriousness can range from just a bump to a mental illness, paralysis, and even death. The minor bumps and bruises often have no long term effects, but more serious injuries often have long term or even permanent side effects. These serious head injuries often lead to a psychological disorder from either the injury itself or the aftermath of the injury (Lehr). To understand the way an injury to the head or brain would occur, one must understand the biology of the brain, and the areas that would be affected. The frontal lobe is the most anterior and it is right under the forehead. It is almost always injured because of its large ...
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  • Differences Between The Left And Right Brain - 1,016 words
    Left, right, left, right--the marching song of the two-mind movement. To hear them talk, you'd think that everyone had a second mind, suppressed by the first. That the vocal left brain dominated the poor artistic right brain. Preventing it from getting a creative thought in edgewise. Soon there will be a consciousness raising movement: Stop referring to the left cerebral hemisphere as the "dominant" one. Invent a more egalitarian term like co-chairperson. Co-chairhemisphere? Alas. Were cerebral physiology so simple! If there were strong dominating influences, it would make our research far easier. It is unfortunate that "dominance" is a word with two entirely different meanings, even within ...
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  • Differences Between The Left And Right Brain - 1,010 words
    ... e right ear, most visual-spatial functions are not exclusive to the right brain. A common one impaired by strokes is the ability to put things back together again--to reassemble the parts of a disassembled flashlight or toaster. Right-side damage causes such "construction apraxias" only about twice as often as comparable left-brain damage. The chances are about the same that map-reading will be impaired. Dressing apraxias, a conceptual inability to match up sleeves with arms when getting dressed, is five times more common on the right. Odds like 2 to 1, or even 5 to 1, are a far cry from language's strong 13 to 1 lateralization ratio. Thus it isn't left or right but both left and right i ...
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  • Neuroligical Biology Of The Brain - 1,299 words
    The definition of Brain as given in the Taber's Cyclopaedia Medical Dictionary is "Brain- a large soft mass of nerve tissue contained within the cranium; the carnal portion of the central nervous system. The anatomy of the brain is composed of neurons (nerve cells) and neuroglia or supporting cells. The brain consists of gray and white matter. Gray matter is composed mainly of neuron cell bodies and is concentrated in the cerebral cortex and the nuclei and basal ganglia. White matter is composed of neuron processes, which form tracts connecting parts of the brain with each other and with the spinal cord. The brain consists of three major parts: the cerebrum, cerebellum, and brainstem ( medul ...
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  • Jay Goulds Essay "natural Selection And The Human Brain," An Argument For Evolution - 1,085 words
    It has been over 100 years since English naturalist Charles Darwin first told the world his revolutionary concept about how livings things develop. Evolution through natural selection and adaptation was the basis of his argument as it remains to this day a debated subject by many. Across this nation, a "return" to "traditional" values has also brought the return of age old debated topics. One issue that truly separates Americans is the issue of creation versus evolution. Since the 19th century, this divisive topic has been debated in school boards and state capitols across America. In many instances religious fundamentalists won the day by having banned the instruction or even the mention of ...
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  • A Funeral In My Brain - 450 words
    Daniel Harouni July 13, 2005 Revised-Essay I Felt a Funeral in My Brian "I felt a funeral in my brain" by Emily Dickinson traces the speaker's descent into madness. It is a terrifying poem for both the speaker and the reader. The speaker experiences the loss of self in the chaos of the unconscious, and the reader experiences the speaker's descending madness and the horror most of us feel about going crazy. Dickinson uses the metaphor of a funeral to represent the speaker's sense that a part of her is dying. This is reason for her, being overwhelmed by the irrationality of the unconscious. A funeral is an appropriate image for this ordeal. The most obvious connotation with a funeral is death. ...
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  • Marching On - 670 words
    Sweat dripping down my face and butterflies fluttering around my stomach as if it was the Garden of Eden, I took in a deep breathe and asked myself: "Why am I so nervous? After all, it is just the most exciting day of my life." When the judges announced for the Parsippany Hills High School Marching Band to commence its show, my mind blanked out and I was on the verge of losing sanity. Giants Stadium engulfed me, and as I pointed my instrument up to the judges stand, I gathered my thoughts and placed my mouth into the ice-cold mouthpiece of the contrabass. "Ready or not," I beamed, "here comes the best show you will ever behold." There is no word to describe the feeling I obtain through music ...
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  • The Accidental Tourist By Anne Tyler - 1,076 words
    "Life just is. You have to flow with it. Give yourself to the moment. Let it happen." If an individual allows changes to occur in ones life, then love can be the wonderful result of that acceptance. The theme of reasons why we love and how we love different people is demonstrated throughout the book The Accidental Tourist, written by Anne Tyler. There are two main characters that undergo and accept the changes in their lives, and one character that stays static throughout the book, helping one of the characters to change. Macon Leary is first grounded by loneliness and comfort, then slowly opens himself up to what appears to be a whole new world for him. Then, there is Sarah Leary, who contr ...
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  • Strength Within Creativity - 748 words
    Despite oppression, African-American women of the past were able to overcome obstacles by taking on the role of artists. They relied on their creative spirits to carry them through their wretched existence. In Alice Walker's essay "In Search of Our Mothers' Gardens," she explains how the mothers and grandmothers of her generation held on to their dignity and strength through their expression of creativity. The boldness represented by this creativity shows the dynamic depth of their souls and the courage they found within it. Walker gives examples of some of these women in her essay and uses this method to effectively express her point. Women such as Mahalia Jackson, Elizabeth Catlett, and Fr ...
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  • Signifance Of Anthropology And Archaeology - 1,521 words
    Anthropologists and Archaeologists Anthropologists and archaeologists have influenced our lives in so many ways. They have taken us back to our most humble beginnings. They have given us an awareness of just how far we have come through the centuries. Archaeology is the investigating of life by unearthing and interpreting the objects left behind by earlier peoples and cultures, dating back to prehistoric times. Anthropology is the scientific study of hominids, their physical features, development, and behavior. Anthropology is broken into two parts: physical and sociocultural. Physical is concerned with human evolution and biology and the study of primates. Sociocultural anthropology investi ...
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