Speech and Language Flashcards
what are two methods of measuring dominance?
intracarotid amobarbital test-the Wada test
fMRI
In whom is atypical speech representation more common?
left handed and ambidextrous
how can family history impact cerebral dominance?
can lead to atypical dominance in an individual and be more predictive than personal left-handedness
how does language cerebral dominance change with age?
becomes less lateralized
if you have injuries to the left hemisphere before age 1, what results?
language develops as usual, but usually have cognitive deficit
if you have injuries to the L hemisphere between 1-5, what happens?
language is OK, but often dominance shifts to the right
also have visual spatial deficit due to crowding
if you get injuries to the L hemisphere after 5, what happens?
language is affected
if you injure anterior or posterior speech areas
may get shift of speech fxn in that area only
in you injure central area of speech
get complete shift of language fxn to the right–cross dominance
dominance patterns for left vs right handedness individuals
usually left hemisphere dominance is seen most commonly in both
disorders of speech
from dysnfunction of speech articulation muscles
examples of disorders of speech
mutism (supplementary motor cortex deficit)
aphonia
aphemia
dysarthria
disorders of language
aphasias
dysfxn in linguistics from injury of CNS
what criteria can be used to evaluate disorders of language
fluency
comprehension
repetition
fluency helps determine
whether language deficit is due to anterior problem (instead of a posterior problem)
