| |
|
Автор: Brian Shmaefsky, I.Edward Alcamo
Издательство: Chelsea House Publications
Год издания: 2004
isbn: 0791067017
Количество страниц: 118
Язык: english
Формат: PDF
Размер: 2 Мб
Каталожный номер: 44689
|
Diseases of the central nervous system can have unexpected effects on a person. Physicians have learned about the way the brain works by studying patients with central nervous system damage. The most common studies about brain function investigated the effects of strokes on behavior and movement. Stroke involves an interuption of blood flow to specific regions of the brain. Studies of stroke victims revealed that the ability to recognize an object is divided up among various regions of the brain. For example, the memory of seeing an apple is stored in a different part of brain from the memories of hearing the word apple, spelling the word apple, and tasting an apple. Strokes to a small region of the brain could cause a person to know the word apple and even be aware of the fruit’s taste without being able to visualize an apple. Studies of people with the degenerative brain disorder Alzheimer’s disease revealed that the condition causes people to lose specific memories while other memories remain intact. Investigating the effects of spinal cord injuries and infectious diseases such as encephalitis and meningitis has also contributed to our knowledge of brain function. Immune system chemicals that disrupt neuron communication cause the hallucinations—illusions of feeling, hearing, or seeing something that does not exist—that result from many types of meningitis. It is believed that too much or too little stimulation to nerves creates hallucinations.
Ключевые теги: медицина |
|
ПОСТУПЛЕНИЯ
РУБРИКАТОР
Комментарии (0)