a disorder of language caused by a defect in either the production or comprehension of vocabulary or syntax
- lesion of Broca's area
- lesion of Wernicke's area
- lesion of the arcuate fasciculus linking the Wernicke's and Broca's areas
- Patient has a fluent aphasia with poor repetition of spoken language
- despite phonetic errors, the patient tends to have good comprehension of spoken language.