![]() ![]() Recognize some semantically meaningful words but fail to comprehend the grammatically significant function words – Agrammatism of written language.Comprehend some spelled words, but poor at spelling aloud.Severe agraphia ability to copy written language poor.Great difficulty naming individual letters of alphabet but can recognize some written words.More recently discovered so also known as the “Third Alexia”.Other common names: verbal alexia, visual alexia, pure alexia, occipital alexia, associative alexia.Disconnects visual info from language cortex.Pathology is typically infarction of left posterior artery territory, including splenium of CC (spares angular gyrus).In most cases, ass’d neuro findings include:.With practice, can learn to read most letters out loud words can then be spelled out loud and recognized auditorially.Easily write but have more trouble copying written language.Writing is almost or totally w/in normal limits BUT can’t comprehend what write.Individual can comprehend written material.Posterior Alexia (Alexia without Agraphia) Other common names: semantic alexia, parieto-temporal alexia, total (literal and verbal) alexia, letter and word blindness, surface alexia.Causes most often from occlusion of MCA or distal branches (inferior parietal lobe) may also be caused by neoplastic lesions.Locus of pathology includes inferior parietal lobe of language dominant hemisphere, centering on angular gyrus typically damage to both cortex and white matter.some degree of hemisensory loss and/or right homonymous visual field defict.components of Gerstmann Syndrome (finger agnosia, right-left confusion, acalculia, and agraphia).Often accompanied by other neurobehavioral disorders including:.loss of ability to name letters, to comprehend spelled words, or to read out loud.preserved ability to copy written language, but in slavish and non-comprehended manner.severe (not necessarily total) disturbance of both reading and writing. ![]() ![]()
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