Aphasia Flashcards
(10 cards)
What is aphasia?
Loss or defect of language (e.g., in speaking, fluency, reading, writing, comprehension of written or spoken material)
Most lesions involve which hemisphere?
Dominant
In 95% of R-handed people, the L cerebral hemisphere = dominant for language
In 50% of L-handed people, the L hemisphere is dominant for language
What are the four types of aphasia?
- Wernicke aphasia
- Broca aphasia
- Conduction aphasia
- Global aphasia
Causes of aphasia (4)
- Stroke. (most common cause)
- Trauma to brain
- Brain tumor
- Alzheimer disease
Wernicke aphasia
- Receptive, fluent aphasia
- Impaired comprehension of written or spoken language***
- Speech is grammatically correct / fluid / but does NOT make sense (pts articulate well but often use wrong words)
Broca aphasia
- Expressive, nonfluent aphasia
- Speech is SLOW and requires effort
- Short sentences
- Content is appropriate/meaningful
- Good comprehension
Conduction aphasia
- Disturbance in repetition
- Pathology involves connections b/w Wernicke and Broca areas
Global aphasia
Disturbance in all areas of language function (e.g., comprehension, speaking, reading, fluency)
Often associated with a R hemiparesis
Most common cause of aphasia?
Cerebrovascular disease
Location of Broca and Wernicke’s areas in relation to central sulcus
Broca: anterior to central sulcus (nonfluent)
Wernicke: posterior to central sulcus (fluent)
