Describe and discuss the neural basis of aphasia, as a syndrome associated with localized damage to the cerebral cortex.

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Describe and discuss the neural basis of aphasia, as a syndrome associated with localized damage to the cerebral cortex.

Language and the ability to speak are major tools of communication of human beings therefore disturbance or loss of speech and impairment in comprehension cause severe disadvantage in daily living. Researchers study aphasia for two reasons; firstly, to improve the success of treating aphasia, and secondly, to gain further understanding of the language-brain relationship. The main value of aphasia in neuroscientific studies is that it is a disorder that exclusively affects language ability without virtually any influence on other cognitive modules. Considering this point, aphasiology can help to explain the relationship between brain and language through those neurological mechanisms, which are implied in the language function.

Language is one of the most accessible parts of human cognition. The phenomenon that the brain injury or trauma to the left hemisphere leads to an impairment or a loss in the language ability whereas injury on the right hemisphere can lead to a loss of ability to express emotions, thereby speech becomes flat, lifeless and mechanical, but leaves the main linguistic functions more or less intact, among other observations, led researchers