An acquired disorder of language is known as aphasia (or dysphasia). Symptoms can include impairments of object naming, word finding, syntax, and comprehension. Some patients have a sparse, labored output; others have unusually voluminous but uninformative speech. The nature of the aphasia varies from patient to patient and reflects the principal lesion site within a distributed left-hemisphere language network. Aphasia can start suddenly when caused by cerebrovascular accidents or progresses relentlessly when caused by neurodegeneration. A neurodegenerative disease that selectively impairs language is known as primary progressive aphasia.
|Original language||English (US)|
|Title of host publication||The Curated Reference Collection in Neuroscience and Biobehavioral Psychology|
|Publisher||Elsevier Science Ltd.|
|Number of pages||5|
|State||Published - Jan 1 2016|
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