Saturday, April 27, 2013

APHASIA


What is aphasia?
Aphasia is a disorder. Damage to parts of the brain that are important for language Results For most people, these are areas on the left side (hemisphere) of the brain. Aphasia usually occurs suddenly, often resulting in a stroke or head trauma, but it can also develop slowly, as in the case of brain tumors, infections, or dementia. The disease weakens the expression and understanding of language as well as reading and writing. Aphasia can occur with speech disorders such as dysarthria or apraxia of speech, which also result from brain damage.

Who has aphasia?
Anyone can win aphasia, including children, but most people who have aphasia are middle-aged and older was. Men and women are equally affected. According to the National Aphasia Association, approximately 80,000 individuals acquire aphasia each year from strokes. More than a million people in the United States currently have aphasia.


What are the causes aphasia?
Aphasia is the failure of one or more languages ​​of the brain. Often, the cause of brain injury is a stroke. A stroke occurs when the blood can not be achieved in the state, part of the brain. Brain cells die when they do not receive a normal blood supply, oxygen and essential nutrients leads. Other causes of brain injury are severe blows to the head, brain tumors, brain infections, and other conditions that affect the brain.

What types of aphasia are there?


Damage to the temporal lobe (side) of the brain, called Wernicke's aphasia aphasia (see figure) lead. For most people, were damaged in the left temporal lobe, although it can occur as a result of damage to the right lobe as well. People with Wernicke's aphasia may speak in long sentences that have no meaning, add unnecessary words, and even made up words. For example, someone with Wernicke's aphasia may say, "You know that and smoodle pinkered, I want to turn it around and take care of it as you want before you." As a result, it is often difficult to follow what the person wants to say. People with Wernicke's aphasia usually have great difficulty understanding speech, and they are often not their fault. These people usually have no body weakness because their brain injury is not near the parts of the brain that control movement.

One type of aphasia without Broca's aphasia. Individuals with Broca's aphasia have damage to the frontal lobes of the brain. Often in short sentences that make sense, are made to speak, but with great difficulty. Often omit small words such as "it," "and" and "." For example, let's say, a person with Broca's aphasia, "Walk dog" meaning, "I want to take the dog for a walk" or "two-table book" for "There are two books on the table." People with Broca's aphasia typically understand the language of other very good. For this reason, they are often about their difficulties and can easily be disrupted. Individuals with Broca's aphasia often have right-sided weakness or paralysis of the arms and legs, because the frontal lobe is also important for motor movements.

Another type of non-aphasia, global aphasia result of the extensive damage to parts of the language areas of the brain. People with global aphasia with severe difficulties of communication and can be tremendously in their ability to speak or understand the language is limited.

There are other types of aphasia, each injury different language areas of the brain. Some people have difficulty repeating words and sentences, although they can speak and understand the meaning of a word or phrase. Others may have difficulty naming objects, even though they know what the object, and that it can be used.