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Pure Alexia
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Pure Alexia
The left visual cortex has been damaged, leaving only the right visual cortex (occipital lobe) able to process visual information, but it is unable to send this information to the language areas (Broca's area, Wernicke's area, etc.) in the left brain because of the damage to the splenium of the corpus callosum. The patient can still write because the pathways connecting the left-sided language areas to the motor areas are intact.
Pure alexia results from cerebral lesions in circumscribed brain regions and therefore belongs to the group of acquired reading disorders, alexia, as opposed to developmental dyslexia found in children who have difficulties in learning to read.
People with pure alexia can be treated using kinesthetic reading (reading by tracing or copying the outline of each letter with the patient's finger).