LING 2604 Lecture Notes - Lecture 9: Hemiparesis, Bulbar Palsy, Arcuate Fasciculus
12 Nov 2015
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Document Summary
Aphasia = language disorder which occurs some time after individual has completely developed competent language skills. Results from neurological damage to language-dominant hemisphere (major hemisphere), usually left. Includes disturbances of receptive &/or expressive skills, verbally or in written language (& in sign language) Cvas (cerebrovascular accidents): ischemic strokes (have to do with plaque buildups in arteries) Thrombosis (develop plaques in blood vessels in arteries to the brain) Blood vessel (usually middle cerebral artery) ruptures & blood pools in cranial cavity. Degenerative diseases: dementias (alzheimer"s, mids, pick disease) Tbi (traumatic brain injury) e. g. mvas (motor vehicle accidents), tumours: language disorder often accompanied by other cognitive challenges e. g. judgement issues, more generalized memory difficulties. Uncontrollable factors: age (most strokes occur after age 65, gender, ethnic group, family history, prior stroke. Controllable factors: hypertension, high cholesterol/heart disease, diabetes, smoking, alcohol use, obesity, oral contraceptives, lack of exercise. Fluent aphasias: (posterior to rolandic fissure: wernicke"s aphasia, transcortical sensory aphasia, conduction aphasia.
