Aphasia

Alexia, or word blindness, is an acquired type of sensory aphasia where damage to the brain causes a patient to lose the ability to read. It is also called text blindness, or visual aphasia. ...more on Wikipedia about "Alexia (disorder)"

Aphasia is a loss or impairment of the ability to produce or comprehend language, due to brain damage. It is usually a result of damage to the language centres of the brain (like Broca's area). These areas are almost always located in the left hemisphere and in most people this is where the ability to produce and comprehend language is found. However in a very small number of people language ability is found in the right hemisphere. Damage to these language areas can be caused by a stroke or physical injury. Depending on the area and extent of the damage, someone may be able to speak but not write, or vice versa, or understand more complex sentences than he can produce. The brains of young children with brain damage sometimes restructure themselves to use different areas for speech processing, and regain lost function; adult brains are less "plastic" and lack this ability. ...more on Wikipedia about "Aphasia"

Aphasiology is the study of linguistics problems resulting from brain damage. ...more on Wikipedia about "Aphasiology"

Conduction aphasia, also called associative aphasia, is a relatively rare form of aphasia, caused by damage to the nerve fibres in the arcuate fasciculus, which connects Wernicke's and Broca's areas. ...more on Wikipedia about "Conduction aphasia"

Expressive aphasia, known as Broca's aphasia in clinical neuropsychology and agrammatic aphasia in cognitive neuropsychology, is an aphasia caused by damage to anterior regions of the brain, including (but not limited to) the left inferior frontal region known as Broca's area ( Brodmann area 44 and Brodmann area 45). ...more on Wikipedia about "Expressive aphasia"

The symptoms of global aphasia are those of severe Broca's aphasia and Wernicke's aphasia combined. There is an almost total reduction of all aspects of spoken and written language, in expression as well as comprehension. Improvement may occur in one or both areas (expressive and receptive) over time with rehabilitation.What is interesting to point out is that in patients of global aphasia other cognitive skills remain functioning - a phenomenom affirming that language faculty is indeed a seperate domain. ...more on Wikipedia about "Global aphasia"

Logorrhoea ( US/ Canadian logorrhea) ( Greek λογορροια, logorrhoia, "word-flux") is defined as an "excessive flow of words" and, when used medically, refers to incoherent talkativeness that occurs in certain kinds of mental illness, such as mania. ...more on Wikipedia about "Logorrhoea"

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Nominal aphasia (also known as anomic aphasia) is a form of aphasia (loss of language capability caused by brain damage) in which the subject has difficulty remembering or recognizing names which the subject should know well. The subject speaks fluently and grammatically and has normal comprehension, and the only deficit is trouble finding appropriate words. ...more on Wikipedia about "Nominal aphasia"

Receptive aphasia, also known as Wernicke's aphasia, "Fluent aphasia" or "sensory aphasia" in clinical neuropsychology and cognitive neuropsychology, is a type of aphasia often (but not always) caused by neurological damage to Wernicke's area in the brain. This is not to be confused with Wernicke's encephalopathy or the Wernicke-Korsakoff syndrome. ...more on Wikipedia about "Receptive aphasia"

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