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Free research essays on topics related to: cerebral cortex

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  • None Provided - 5,836 words
    When we discuss our brain, we usually focus on the brains ability to think. That task alone is extremely complex and involved, but the brain also has many other tasks. Most of the time the brain is on autopilot, meaning that most of the activities preformed are just automatic. Our five senses; sight, sound, touch, taste, and smell, are automatically preformed in our brains. We don't have to think about how something sounds, we just hear it and we then interpret that sound. The largest area of our brain is the area that is set aside for vision, it is located in the occipital lobe. Dr. Gerard Guarniero has been blind since birth, a defect in which he has never been able to fix. Recently, he ha ...
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  • Affolding In Education - 2,053 words
    ... ating such authentic simulations appears to limit its capacity to accommodate this. Even more ill-structured academic areas such as History and Philosophy require a level of context, even if that context is the academic one requiring the implementation of a culturally specific methodology and use of language. It is here, perhaps, that a Social Constructivist approach may be particularly useful. It could be argued that the use of the Web is best suited to that of a communications medium for collaborative approaches to learning rather than as a "24 hour a day glorified whiteboard" (Archee & Duin, 1995). Such a use would involve a high level of social rather than physical interaction; an as ...
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  • The Human And Dolphin Relationship - 1,446 words
    The voice of the dolphin in the air is like that of the human in that they can pronounce vowels and combinations of vowels, but have difficulties with the consonants (Aristotle internet). The communication between dolphins can only be described scientifically and historically. The true nature of how dolphins communicate with one another and possibly with other species is something only known to the dolphin. It is an evolving, complex mystery we are only now starting to grasp the significance of. Eventually it may be possible for humans to speak with other species. I have come to this conclusion after careful consideration of evidence gained through my research experiments with dolphins (John ...
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  • Seizures - 532 words
    Regardless of the etiologic factor or type of seizure, the basic mechanism is the same. The electric discharges (1) may arise form central areas in the brain that affect consciousness immediately; (2) may be restricted to one area of the cerebral cortex, producing manifestations characteristic of that particular anatomic focus; or (3) may begin in a localized area of the cortex and spread to other portions of the brain, which if sufficiently extensive, produce generalized neurologic manifestations. Seizure activity is believed to be caused by a spontaneous electric discharge initiated by a group of hyperexcitable celled referred to as epileptogenic focus. Normally these discharges are restra ...
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  • Laughter - 1,230 words
    Laughter is an emotion that has been vastly underestimated by our society. Laughter is ultimately an expression of emotion - joy, surprise, nervousness, amusement. Laughter is the sun that drives winter from the human face. Laughter is a healthy means of releasing pent-up feelings. Laughter is such an intristic part of our lives that we sometimes forget how very odd Platos Superiority Theory suggests that we laugh because a particular person has a defect or is at a disadvantage (Blistein 563). Anecdotal evidence has long suggested that people feel better after a hearty laugh. Laughter can also promote coughing, which, in turn, helps rid the trachea and bronchi of phlegm and Laughter is a nat ...
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  • Gender Differences - 1,404 words
    What are the differences between boys and girls? How different are they, and what causes thses differences? How is gender identity developed and how does it affect childrens behavior and attitudes? Gender identity is the awareness of ones gender and all it implies (Human Development *text*, 286). Gender differences are explained as psychological or behavioral differences between both genders. There are many theories to how and why gender differences exist. Some people argue that circumcision at birth is a factor, others say the differences are greatly influenced by the human brain. Recent studies show that there are great specific differences found in both the male and female brain. Next, on ...
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  • Lsd - 1,557 words
    Pg.8 LSD Longo-Vega To understand the ways that LSD affect the brain we must first discuss how the brain sends signals to the body. In the brain and the brain stem there are special cells called neurons. Neurons release a number of chemicals that are sent to various receptors. The receptors interpret chemical signals and use them to make you move, see, hear, learn, etc. These neurons are also responsible for such behaviors as obsessive-compulsive behavior and insomnia. The cells that are directly responsible for those behaviors are called serotonergic neurons. This means that they release the chemical serotin (5-HT). In general serotin acts as an inhibiter. These cells number only in the tho ...
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  • Adhd - 1,208 words
    ... n of responsibility for keeping the household running smoothly and meeting the needs of the children, the spouse with ADD, and, if he or she has time, his or her own priorities. Raising a child who has ADD can be an exhausting and, at times, frustrating experience. Parents play a key role in managing the disability. They usually need specialized training in behavior management and benefit greatly from parent support groups. Parents often find that approaches to raising that work well with children who do not have ADD, do not work as well with children who have ADD. Parents often feel helpless, frustrated and exhausted. Especially if the child's condition is unknown at the time. It could ...
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  • Basic Psycology - 1,096 words
    ... w York: Basic Books. 1985 Gardner, H. : Multiple intelligences: The theory of practice. New York: Basic Books. 1993 Gardner, H. : Problem solving in the arts. J of Aesth Educ. 1971 5:93-114. Gardner, H., and Winner, E. : Artistry and aphasia. In: acquired aphasia. Sarno, M.e. New York: Academic Press. 1981 361-384. Gates, A.I., and Taylor, G.A. : The acquisition of motor control in writing by pre-school children. Teach Col Rec. (19230 24:459-469. Gazzaniga, M.S., and LeDoux, J.E. : The integrated mind. New York: Plenum Press. 1978 Georgopoulos, A.P., J. Ashe, N. Smyrnis, and M. Taira. 1992. Motor cortex and the coding of force. Science 256:1692-1695. Georgopoulos, A.P., J. Lurito, M. Pet ...
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  • Adolescent Depression - 1,902 words
    Depression is a disease that afflicts the human psyche in such a way that the afflicted tend to act and react abnormally toward others and themselves. Adolescent depression is greatly under diagnosed, and leads to serious difficulties in school, and personal adjustment. The reason why depression is often overlooked in children is because children are not always able to express how they feel. Therefore, teachers should be trained in dealing with depressed youths, and to advise the parents of the child to seek professional treatment. School is the place where children spend most of their waking hours learning, socializing, and growing. A child needs to be mentally healthy in order to learn pro ...
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  • Simulation - 1,286 words
    By a "superintelligence" we mean an intellect that is much smarter than the best human brains in practically every field, including scientific creativity, general wisdom and social skills. This definition leaves open how the superintelligence is implemented: it could be a digital computer, an ensemble of networked computers, cultured cortical tissue or what have you. It also leaves open whether the superintelligence is conscious and has Entities such as companies or the scientific community are not superintelligences according to this definition. Although they can perform a number of tasks of which no individual human is capable, they are not intellects and there are many fields in which the ...
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  • Ffect Of Stress On Decision Making - 1,621 words
    Stress must be present to ensure our very being. One may wonder about the validity of this statement, but it is quite true. Stress plays a vital role in the way we make decisions (Massa et al, 2002, pg 1). Problem solving and decision making in demanding real-world situations can be susceptible to acute stress effects which manifest in a variety of ways depending on the type of decision. The negative effects of an overload of acute stress include attentional tunneling, working memory loss, and restrictions in long term memory retrieval, with simple strategies being favoured over more complicated ones. The underlying assumption is that stress can lead to errors, poor performance and bad decis ...
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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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  • Electroconvulsive Shock Therapy For Mental Disorders - 1,205 words
    Since its introduction to the world in the mid 1930s, electroconvulsive shock therapy, or ECT, has been one of the most effective and least understood treatments in psychiatry. The technique itself has changed in many ways since its conception and is now considered a safe and effective treatment of patients with major depressive disorder, manic episodes, schizophrenia, and other serious mental disturbances. However, the neurobiological changes critical to the therapeutic success of ECT have not yet been fully understood. Such a knowledge gap has led to an inaccurate portrayal of ECT in the media and misconceptions about ECT being held by many patients, lay people, and even health care profes ...
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  • Biography Of Oprah Winfrey - 1,920 words
    Oprah Winfrey has always been an achiever. As a child she was a victim of sexual abuse. As a teenager she became Miss Black Nashville. Now, as an adult she is the worlds black millionaire in a white, male-dominated world. Oprah Gail Winfrey was born on January 29, 1954 in Kosciusko, Mississippi. Her name was believed to be Orpah from the Book of Ruth; however, the midwife got mixed up and so she wound up being Oprah on her birth certificate. (Adler 1) When Oprah was five years old she wished that she were white. She would sleep with a clothespin on her nose and two cotton balls seeking for it to turn up. She prayed for Shirley Temple curls every day. Oprah wanted to be white because white ki ...
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  • The Biology Of Survival - 628 words
    According to Charles Darwin, the various species and individuals compete for the same territories, and thus organisms that are better adapted to their environment are more likely to survive, reproduce, and transmit their features or traits to the next generation. Ability to reproduce efficiently In actuality, there are a few brain structures that give humans the arousal, desire, and necessity to reproduce. However, the Reticular Activating System and the Hypothalamus are particularly responsible for these needs. The Reticular Activating System serves primarily for arousal, while the Hypothalamus produces sexual behavior and mating desire. This is perhaps the most important factor of human s ...
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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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  • Study Of Psychotic Disorder, Schizophrenia - 978 words
    Schizophrenia is the most common of all psychotic disorders, yet it still occurs in only in 1% of the worlds population. It usually occurs in people of age 14-45, but it can strike anybody at anytime. Schizophrenia has many symptoms, causes, and treatments. Some people recover, some do not. Schizophrenia is an unpredictable and often debilitating disorder, and a common source of study in psychology. The website www.schizophrenia.com is an excellent source for anyone diagnosed with the illness or anyone with a friend or family member suffering from the illness. When someone cannot tell the difference between what is real and what is imaginary, they may be described as having a psychotic illne ...
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