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Free research essays on topics related to: cortex

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  • Differences Between Men Boys And Girls
    1,408 words
    What are the differences between boys and girls? How different are they, and what causes the 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 bir...
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  • Mad Cow Disease Role In Human
    1,184 words
    ... of cells from one region of the nervous system. The study used data from patients with Huntington's disease and Parkinsons disease. It showed that cumulative theory was false. The mutant steady model, which explains nerve cell death inherited neurodegenerative diseases, shows that mutant genes are conferring a slight but definite increase in risk that the cell could suddenly undergo programmed cell death. This new theory means researchers will now try to aim at the factors that trigger the i...
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  • Of Stress On Decision Making
    1,664 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 r...
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  • Spinal Cord Cerebrospinal Fluid
    1,005 words
    ... main, 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,...
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  • Attention Deficit Hyperactivity Disorder Adhd
    1,998 words
    Attention Deficit Hyperactivity Disorder (ADHD) or Attention Deficit Disorder without the Hyperactivity (ADD) is a condition of the brain that makes it difficult for children to control their behavior in school and social settings. This condition is also called by various names: hyperactivity, minimal brain dysfunction, minimal brain damage and hyper kinetic syndrome. In 1968 the name was changed to hyperkinectic, meaning wildly fast-paced or excited, reaction of childhood. The focus was on Hype...
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  • Ability To Communicate Body Temperature
    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...
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  • Back Of The Head Optic Nerve
    1,395 words
    Today, there are many forms of imaging available to the medical profession. Among the more well-known types include x-rays, ultrasounds, CT scans, PETscans, and the most groundbreaking, the MRI. One lesser known form of imaging is the technique of evoked potentials. The evoked potential uses stimulation of the body to force activity in the brain. Using electrodes, a clinician can take signals directly from the brain without any intrusive methods. The electrodes remain on the surface of the skin ...
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  • Form Of Meditation Pituitary Gland
    1,026 words
    ... of the head, most likely in one of the ears. You should not listen to the sound current in the left ear because this is psychically harmful. Listen to it in the right ear, and gradually try to move it to the center and top of the brain. From this vertex center, known as the Sahasraram Chakra (whose associated gland is the pineal body), allow the vibration of the sound current to fill the entire head and to then expand beyond the head into the surrounding space. This is one of the classical m...
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  • Prefrontal Cortex Intimate Relationships
    980 words
    This article is from the April 2003 issue of Psychology Today. In chapter 2, behavior is the main topic. Behavior is a bit unexplainable, but it can be put into form of patterns or predictions. Also, behavior is uncontrolled, but can be changed to a small degree with the use of medicine or a good diet. This article "Fighting Crime One Bite At A Time" tells how a good diet can maybe decrease the number of rule breaking by prisoners in jail. This article relates how changing ones nutrition can cha...
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  • Cerebral Cortex Planned Parenthood
    1,004 words
    Abortion is one of the most controversial and talked about topics of our time. It is discussed in classrooms, work places and even on the Internet. Abortion is defined as the termination of pregnancy after, accompanied by, resulting in or closely followed by the death of an embryo or fetus. This definition includes accidental abortion such as, miscarriage and stillbirths. But this is not what is being debated. People want to know if abortion is ethical, if the fetus can feel pain, and when it is...
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  • Prefrontal Cortex Stephen Kings
    1,720 words
    ... in the brain that result in changes in behavior as well. Stress increases the size of the amygdala (as evidenced by the increased display of fear in rats) and causes shrinkage of another part of the brain called the hippocampus. Brain changes can also be observed in studies of patients with major depression. Stresses early in life such as low birth weight, low socioeconomic status, a negative home environment, and physical or sexual abuse can influence an individual's physical response to st...
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  • Month Old Baby Violence On Television
    2,453 words
    Breaking the Chains of Violence To return violence for violence does nothing but intensify the existence of violence and evil in the universe. Someone must have sense enough and morality enough to cut off the chains of violence and hate. -Martin Luther King, Jr. We live in a society that has seen a tremendous rise in juvenile violence over the past ten years. Juvenile homicides are twice as common today as they were in the mid- 1980 s (Begley 35). Forcible rapes by juveniles rose 28 % between 19...
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  • Mayo Clinic American Academy
    2,305 words
    Cataracts In Cataracts Cataracts 2 Cataracts In Elderly Introduction What is a cataract? A cataract is a cloudy or opaque area in the normally transparent lens of the eye. Its effect on vision depends on the extent of the cloudiness. Small spots in the lens may cause little or no vision loss. As the opacity thickens, it prevents light rays from passing through the lens and focusing on the retina, the light sensitive tissue lining the back of the eye. Early lens changes or opacities may not distu...
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  • Endocrine Glands Amino Acids
    1,069 words
    Hormones are organicHormi? one Introduction Hormones are organic substances that are secreted by plants and animals and that function in the regulation of physiological activities and in maintaining homeostasis. They carry out their functions by evoking responses from specific organs or tissues that are adapted to react to minute quantities of them. The classical view of hormones is that they are transmitted to their targets in the bloodstream after discharge from the glands that secrete them. T...
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  • Cranial Capacity Significant Differences
    983 words
    The Human Brain Through the use of molecular biology it is thought that the hominidae family first appeared about 5 million years ago. Based on this time frame it is believed that an African Hominoid lineage was present shortly before that time, approximately 10 my, which contained the common ancestor to both the chimpanzee and human. The split into proto-chimpanzee and proto-human occurred during the last million years of the Miocene epoch. (Changeux and Chavaillon pg. 61). The fossils, especia...
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  • Part Of The Brain Parts Of The Brain
    1,891 words
    My research paper is about the anatomy of an optical illusion. Optical Illusions are relevant to aviation in that the main guidance system of most aircraft on most flights is the pilots eyes. Everyone, including pilots, is susceptible to an optical illusion. The hazards of optical illusions are many considering that at any time during the flight they can cause a healthy and experienced pilot to become confused, delusional and generally disoriented with obvious possible consequences. This is why ...
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  • Temporal Lobes Frontal Lobe
    1,121 words
    Background Huntingtons Huntingtons Disease Huntington's Disease Background Huntington's disease is inherited as an autosomal dominant disease that gives rise to progressive, elective (localized) neural cell death associated with choleric movements (uncontrollable movements of the arms, legs, and face) and dementia. It is one of the more common inherited brain disorders. About 25, 000 Americans have it and another 60, 000 or so will carry the defective gene and will develop the disorder as they a...
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  • Blood Pressure One Hundred
    566 words
    In vertebrates, kidneys Kidneys Kidneys In vertebrates, kidneys are the two major organs of excretion. Excess water, toxic waste products of metabolism such as urea, uric acid, and inorganic salts are disposed of by kidneys in the form of urine. Kidneys are also largely responsible for maintaining the water balance of the body and the pH of the blood. Kidneys play important roles in other bodily functions, such as releasing the erythropoietin protein, and helping to control blood pressure. Kidne...
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  • Id Ego And Superego Parts Of The Brain
    2,026 words
    How Does Unconscious Differ From Consciousness? Essay, How Does Unconscious Differ From Consciousness? The QUESTION: How Does Unconscious Differ From Consciousness? Consciousness and unconscious are two psychological terms that are commonly used in this field of study. Their importance's mainly appear when psychologists deal with their patients because they will surely think about these two terms. To understand these two terms we must know their definitions. This step can enable us to recognize ...
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  • Lymph Nodes Nervous System
    1,517 words
    Stress is the nonspecific response of the body to any demand made on it. Each demand made on the body is specific. Each drug or hormone has specific actions, yet they all have one thing in common; they increase the demand for readjustment. This demand is nonspecific; it requires adaptation to a problem. In other words, in addition to their specific actions, all agents to which we are exposed also produce a nonspecific increase in the need to perform adaptive functions to re-establish normality. ...
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