Alzheimer's disease is one of the most common diseases known among elderly people. Alzheimer disease is a degenerative brain disease, cause by a slow break down of the brain cells. There are many opinions of what causes Alzheimer's disease but the actual cause is still unknown. Scientists ...

"Vision," says neuroscientist William Newsome, "happens in the brain, not the eye (Siegfried 1)." Although light enters the body through the eye, the majority of the processing takes place in the brain. A full quarter of the cerebral cortex is devoted to sight (Brownlee 1). L...