Chapter 16 Flashcards
Describe the 3 tests used for cerebral lateralization of functions such as
1) sodium Amytal test
2) dichotic listening
3) fMRI
What is aphasia? List one type type of aphasia
Deficit in ability to produce or comprehend language (ex: broca’s aphasia)
In studies using PET or fMRI, which hemisphere of the brain demonstrates greater activation when one performs a language test?
Left hemisphere
Describe wernicke’s aphasia
- Deficits in receptive language
- Poor comprehension of spoken and written language
- fluent speech that sounds normal but doesn’t make sense
Describe broca’s aphasia
- deficits in expressive language
- normal comprehension of written and spoken language
- meaningful speech that is slow, disjointed, and poorly articulated
What is the function of the arcuate fasciculus?
Pathway connecting wernicke’s and Broca’s areas
What is global aphasia
Disruption to all language abilities (expressive and receptive) due to lesions in anterior cortex, posterior cortex, and white matter
Define phonological analysis
Analysis of sound of language
Define grammatical analysis
Analysis of the structure of language
Define semantic analysis
Analysis of the meaning of language
Define dyslexia
Pathological difficulty in reading that does not result from visual, motor, or intellectual deficits.
Define surface dyslexia
Loss of lexical procedure (ability to recognize words based on memories for words), but can use phonetic procedure (sound out words)
Define dyslexia
(Phonological dyslexia)-loss of phonetic procedure (ability to apply rules of pronunciation in reading), but intact lexical procedure (recognize and pronounce familiar words from memory)
