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Years Of Age Dec 1999
1,044 wordsMacular Degeneration is a problem in the part of the eye that controls your sharpest central vision. It is a group of diseases that result in a loss of detailed vision. The brain will not just leave the spot empty, so it learns to fill it in with spotty macular cell damage. People most of the time don't tell their doctors (opthalmologist's) about it until it is well in advance. There are two types of Macular Degeneration. Juvenile Macular Degeneration affects the central vision in young children...
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Institute Of Technology Neural Networks
1,400 wordsCurrent neural network technology is the most progressive of the artificial intelligence systems today. Applications of neural networks have made the transition from laboratory curiosities to large, successful commercial applications. To enhance the security of automated financial transactions, current technologies in both speech recognition and handwriting recognition are likely ready for mass integration into financial institutions. Computer-Aided Voice Recognition 6 The purpose of this study ...
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Knowledge And Experience Depth Perception
2,227 wordsINTRODUCTION Perception is defined as a process by which organisms interpret and organize sensation to produce a meaningful experience of the world. Sensation usually refers to the immediate, relatively unprocessed result of stimulation of sensory receptors in the eyes, ears, nose, tongue, or skin. Perception, on the other hand, better describes one's ultimate experience of the world and typically involves further processing of sensory input. In practice, sensation and perception are virtually i...
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The Bottle Nosed Dolphin
1,135 wordsThe Bottle-nosed Dolphin is the most studied and generally the best-known species of dolphin. Bottle-nosed dolphins are classified "Tursiops truncates" in scientific name, and belong to the family Delphinidae, in the suborder Odontoceti, order Cetacea. This animal is a very intelligent individual. Bottle-nosed dolphins are commonly found in zoos or marine parks because of their capability to perform tricks. They can jump through hoops 5 meters high because of their incredibly powerful tail. As w...
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Blurred Vision Color Blindness
1,009 words... interpreted, and sight occurs. Light must pass through the covering layers of the retina to reach the layer of rods and cones. There are about 75 to 150 million cones in the human retina. Rods do not detect lines, points, or color. They perceive only light and dark tones in an image. The sensitive rods can determine outlines of objects in almost complete darkness. They make it possible for people to see in darkness or at night. Cones are the keenest of the retina's receptor cells. They detec...
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Electrical Impulses Mental Phenomena
663 wordsHuman beings have a conception of at least two different kinds of things that exist in the world, mental and physical. Any of us could generate a long list of obvious physical things and clear cases of psychological things. And we assume that both of these types of things, mental phenomena and physical phenomena, are part of our world. But in order to get a more unified, overall picture of the world, we need to consider what the connection is between these two categories. How are the mental and ...
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Distant Objects Whats Wrong
687 wordsThe human eye is a wonderful thing. It lets us view things. They can give us another eye color, or we could just use them to simply view things. But its not that simple you see. Some people arent that lucky, and have impaired vision. This includes near-sightedness and far-sightedness. To begin though we must understand how the eye works, and why it works that way. First is the cornea, which is a clear dome that covers the front of the eye. The cornea accomplishes the majority, which is about 70 ...
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Light And Dark Black And White
1,313 wordsPerception involves the input of basic information from a retinal image. Retinal images can be ambiguous in terms of size and orientation of lines, blood vessels infront of the retina, eye tremors and the blind spot can affect perceptual responses. One retinal pattern can lead to different interpretations and distorted images from inadequate sensory data, but perception of something as a recognisable object remains stable despite variations in the retinal image, such as light, or position of the...
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Signs And Symptoms Blurred Vision
1,164 wordsVision is the learned ability to see for information and performance; it allows us to understand things that we cannot touch, taste, smell or hear. 20 / 20 vision does not mean perfect eyesight. 20 / 20 vision simply means that at a 20 ft. distance a person is able to see a certain letter than an average eye should be able to see at that distance. You can have 20 / 20 vision and lack the abilities to use your two eyes together as a team, to judge distances, to identify colors and to coordinate y...
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Blind Spot Enlargement In Non Athletes
1,160 wordsEveryone has a blind spot in the visual field caused by an absence of nerves on the retinal wall where the nerve ganglia enter. Our brains 'correct' this blind spot by filling-in the missing information so that we do not notice the blind spot in normal, daily activity. There have been a few studies conducted to determine how the brain compensates for the phenomenon. Recent studies indicate that in certain people seeking chiropractic treatment, unequal blind spots result from musculoskeletal misa...
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Running Head Sensory System
637 wordsRunning head: SENSORY SYSTEM Sensory System July 16, 2009 Sensory System Part 1 Cataract Cataract is a clouding of the lens in the eye. This clouding affects normal vision. In order to understand how does cataract formation represent a variance from normal anatomy and physiology, it is important to understand the lens and its functioning. The lens is a clear part of human eye helping to focus image or light on the retina (the light-sensitive tissue at the back of the human eye. In a normal eye w...
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Distant Objects Early Detection
1,242 wordsCorrective Lenses Today many people suffer from eye illnesses. And many of those people choose to wear corrective lenses, but they dont not much about them. When we use things, we often dont realize how important they are, what meaning they possess. So what are corrective lenses? How do they work? To understand that we have to know how a human eye works. The work of a human eye is based on a principle similar to that of a camera. An eye has a natural lens through which the light goes and focuses...
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Mayo Clinic American Academy
2,305 wordsCataracts 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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Color Blindness Red Green
517 wordsColor Blindness Color blindness (Daltonism; color vision deficiency) is a condition in which certain colors cannot be distinguished, and is most commonly due to an inherited condition. Although defective color vision may be acquired as a result of another eye disorder, the vast majority of color blind cases are hereditary present at birth. A form of color blindness is present to some degree in about 12 per cent of males, and about 0. 5 per cent of females may be affected. Problems in distinguish...
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Vessels In The Back Blood Vessels In The Back Eye
431 wordsSeeing the Vessels of the Retina Have you ever seen a doctor look into a patients eye with an instrument called an ophthalmoscope? The instrument lights up the inside of the eye and magnifies the vessels of the retina in the rear of the eye. This gives the doctor an idea about how healthy you are as he looks at all the vessels in the back of your eye. HYPOTHESIS I wanted to know if a person could see the blood vessels in the back of their own eye without using the instrument that the doctor uses...
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Freud Theory Personality
1,720 wordsThe ego, a word that is arbitrarily used by mean, has a quite distinct and significant meaning. Ego development is an aspect of psychology that has been discussed by a number of authors and psychologist. Many different authors have concluded a variety of theories behind the ego and its many stages and its effects upon one? s personality. According to Zimbardo (1992) Freud? s theory showed that personality differences arise from the different ways in which people deal with their fundamental drive...
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Visually Impaired Blurred Vision
705 wordsPeople categorized as visually impaired range from individuals with mild visual losses to those with low vision to those who are totally blind" (Winzer, 370). Vision impairments does not necessarily mean a total loss of sight. Some visually impaired person can detect light, others can see shapes and forms, and others can see nothing at all. Generally, many different problems that interfere the retina to form image or the transmission of retinal images to the brain can cause blindness or vis...
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Protease Inhibitors Bodily Fluids
1,198 wordsCytomegalovirus Retinitus Cytomegalovirus (CMV) infection is very common within the general population, but it often shows little or no symptoms in healthy people (Gateway). It infects between 50 % to 85 % of adults in the United States by the age of 40 (CDC). However, in the immuno depressed population, there is often an active infection that shows many possible symptoms. Within the HIV infected community, the CMV virus? most common symptoms are retinitis and gastrointestinal problems (Gateway)...
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Digestive Enzymes Nerve Fibers
979 wordsPolyplacophora &# 038; Cephalopoda Polyplacophora The phylum Polyplacophora, meaning many plates, contains chitons, marine mollusks with oval bodies bearing eight dorsal plates. Chitons live only in marine habitats and are commonly found in rocky areas of the intertidal zone along the coasts of almost every sea. They are stationary and cling to their rocky surfaces. Chitons are supported by eight calcareous plates called valves. Depending on the species, these plates may be small or large, cover...
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Neural Networks Speech Recognition
2,841 wordsABSTRACT Current neural network technology is the most progressive of the artificial intelligence systems today. Applications of neural networks have made the transition from laboratory curiosities to large, successful commercial applications. To enhance the security of automated financial transactions, current technologies in both speech recognition and handwriting recognition are likely ready for mass integration into financial institutions. RESEARCH PROJECT TABLE OF CONTENTS Introduction 1 Pu...
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