Higher cortical function Flashcards
What is an aphasia?
any acquired abnormality of language
A patient has a lesion of the posterior part of the inferior frontal gyrus. What defect do you expect?
broca’s aphasia
What are key differences between Wernicke’s and Broca’s aphasia?
broca’s - aware of deficit
wernicke’s - word salad
A patient has a lesion of the posterior part of the superior temporal gyrus. what defect do you expect?
wernicke’s
What is the definition of a transcortical motor aphasia?
unable to speak (broca’s), understand, repetition preserved
What is the definition of a transcortical sensory aphasia
unable to comprehend, able to speak, able to repeat
A patient has a lesion in the occiptal lobe that also involves the splenium of the corpus callosum. What finding might you expect?
alexia without agraphia (can write but cannot read) - fibers between occipital region and wernicke’s are affected
How do patients with apraxia often respond to commands like “comb your hair with a comb?”
use their fingers
What regions are most likely responsible for apraxias?
frontal or parietal lesions in dominant hemisphere
What regions typically cause agnosias?
lesions of the sensory association areas
What are the signs of Gerstmann’s syndrome?
agraphia, acalculia, finger agnosia, left right confusion
What region is affected in Gerstmann’s syndrome?
angular gyrus (inferior parietal lobe on dominant side)
What is the most sensitive sign of neglect?
extinction to simultaneous stimulation
What region of the brain is likely responsible for prosody?
non-dominant hemisphere
What region of the brain is likely responsible for neglect?
non-dominant hemisphere
