Communication Sciences and Disorders 4411A/B Lecture Notes - Lecture 15: Aphasia, Language Testing, Frontal Lobe
30 Dec 2015
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Document Summary
Collection of clinically diverse, acquired disorders that affect production and comprehension of spoken language, written language, and nonverbal communication. Damage to cortical and/or subcortical regions known to support language functioning o o. Left hemisphere controls most language processes in most people. Focal damage to left hemisphere results in aphasia. Right hemisphere contributes (to lesser extent) to language functions. Right hemisphere damage does not usually result in aphasia but can lead to cognitive- communication disorders. Different types and severity depending on location and size of region(s) involved. Ischemic (includes clots such as embolism and thrombosis. Transient ischemic attack o o: hemorrhagic (includes aneurysm, arteriovenous malformation) Reduced vocabulary o: omission/addition of words or grammatical markers, word substitutions, delayed or reduced output of language. Impaired interpretation of linguistic information (words, grammar, syntax, etc. ) Main problems in understanding spoken and written language. Word substitutions, neologisms, and often verbose verbal output: nonfluent aphasias. Site of lesion often posterior in left hemisphere.
