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Nerve Signals From The Retinal Ganglion Cells
2,064 wordsEveryday, we rely on our five senses: taste, touch, seeing, hearing, and smelling. These are simple processes that we have accepted as part of our lives. However, the process which lets our body actually use these senses is not so simple. In this paper I will look at the ways which the nervous system and the brain work together to produce our senses. Seeing The Light Humans are intensely visual animals. The eyes send millions of nerve signals every second for analysis, interpretation, and record...
Actions Of Nicotine On Brain Neurotransmitter Systems
1,878 wordsCHEMISTRY SOCIAL ISSUE REPORT Michael Yates 1997 Nicotine Killer or Wonder Drug Nicotine, one of the most unusual psychoactive drugs known, and the primary pharmacological agent of addiction in cigarettes, triggers powerful physical and psychological reactions in species as diverse as cockroaches and humans. Nicotine has been proven to boost concentration, improve memory and control body weight, as well as alleviating the symptoms of Alzheimer's and Parkinson's Disease sufferers. However, resear...
Risk Factor For Stroke
2,287 wordsStroke, an injury to the brain from failure in blood flow or bleeding leaves millions of human beings disabled. This is one of the most devastating and costly health problems that society faces. It affects more than 500,000 Americans each year, although Americans managed to cut the stroke death rate nearly in half during the 1970's and 1980's the 1990's is the Decade of the Brain. The nonfatal strokes, which have been decreasing along with the stroke death rate, now appear to be increasing for u...
Brain's Nerve Cells
569 wordsThe typical visible symptom is progressive and chronic memory loss, and the average duration is ten years. The previous definition just described Alzhiemers disease. A disease that is considered to be a major public health challenge since the average age of the world is increasing. ALheimers disease is destroying the brains and lives of our motions older adults, and robbing the of their memory, the ability to reason and affecting their emotions and behavior. Alheimers disease is a degenerative d...
Inflammation Of Brain Cells
728 wordsENCEPHALITIS Encephalitis literally means an inflammation of the brain, but it usually refers to brain inflammation caused by a virus. It may also be called 'acute viral encephalitis or aseptic encephalitis'; . Encephalitis is an infectious disease of the Central Nervous System characterized by pathologic changes in both the gray and white matter of the spinal cord and brain. It may be due to specific disease entity such as rabies or an arthropod-borne virus (arbovirus), or it may occur as a seq...
Their Home Brain Cell
402 wordsEverybody knows cocaine is bad for you. So why do so many people take it It gets you high. You feel good for a little while. Then you re sad again. Teenagers have this problem a lot. Scientists have found a way to maybe prevent highs when using cocaine. Actually, they found a way in animals, and they are hoping to use it on humans. The team showed that the epilepsy drug gamma vinyl-GABA, or GVG, blocked cocaine's effect in the brains of primates, including the process that causes a "high" feelin...
Cell Phone Radiation Concerns
1,199 wordsHazards of Mobile Cell Phone Radiation In 1994, there were 16 million cell phone users in the U.S. alone. As of July 2002, there were more than 150 million in the U. S, and over 750 million worldwide. The word radiation is often thought of as referring to the emanations from radioactive materials and X-rays. However, when scientists use the word radiation, they are usually referring to the electromagnetic radiation (EMR). Electromagnetic radiation consists of waves of electric and magnetic energ...
609 wordsWhat is Epilepsy? Epilepsy is the most common serious neurological condition affecting people of all ages. Today there is estimated to be about 350,000 people with epilepsy. The condition occurs in all ages, races and social classes. Most cases develop during infancy or by late adolescence. Yet today the degree of epilepsy is not fully understood. Researchers say the fallowing are leading causes of the condition; damage to blood vessels, inherited, trauma, tumors, degeneration, infections, and u...
Brain Cells Into Patients
1,025 wordsBrain cell research offers hope for Alzheimer's NEW YORK, Feb 28 (Reuters Health) – Taking cells from a region of the brain known as the hippocampus, an international team of researchers have grown functional brain cells in lab cultures. The findings may have profound implications for restoring damaged or degenerative brain cells, which occurs in diseases such as Alzheimer's and Parkinson's. The brain has recently been shown to regenerate some of its cells, but scientists were unable to id...
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