Brain2

What is meant by aphasia?

Dysfunction of the comprehension and formulation of language caused by disturbances to specific brain regions.
Does aphasia only occur in auditory based languages?

No, also to visual-motor (sign language) and written modes of language.
Aphasia is a disorder of ______ not a disorder of perception.

linguistic processing
Aphasia is predominantly caused by lesions to the _____ hemisphere.

left
Name the classical aphasic syndromes.
- Broca's
- Wernicke's
- Conduction
Describe Broca's aphasia (symptoms and most likely lesion location).
- Labored speech
- Cannot repeat verbatim
- Comprehension intact
- Lesion to left inferior frontal gyrus, also to surrounding frontal regions, underlying white matter and basal ganglia
Describe Wernicke's aphasia (symptoms and most likely lesion location).
- Speech is fluent but unintelligible
- Unable to repeat
- Unable to comprehend
- Lesion to the posterior section of the left temporal regions (STG/MTG-association areas surrounding the primary auditory cortex)
Describe conduction aphasia (symptoms and most likely lesion location).
- Effortless speech
- Cannot repeat verbatim
- Essential comprehension intact
- Lesion to supramarginal gyrus, sometimes extending to the insular cortex, damage to underlying white matter tracts

Author

amykath

114767

Card Set

Brain2

Description

Language and the Brain Exam 2

Updated

2011-11-06T03:26:52Z