Hemisphericity Flashcards
R hemisphere is dominant for ____
visual-spatial tasking
Patients with R hemisphere damage lack ___, ___, and ___
spatial organization, 3-D thought, and prosopagnosia (unable to recognize faces
T/F: Pts with R MCA CVA only neglect L motor function
F: patients also neglect L sensory experiences and L mental images as well
What is anosognosia
R hemisphere defect presenting as denial of disability
what does the literature say about the resolution of neglect and why is this important?
50% resolve within 12 weeks of stroke (60% up to a year) - a huge safety concern for community reintegration
what are three tools used to assess neglect?
line bisection, target cancellation, copying/drawing tests
what are five techniques used to treat L neglect
- scanning (lighthouse technique)
- limb activation
- prism treatment
- eye patching
- mirror therapy
how (generally) does prism glasses treatment work
motor adaptation resulting from error augmentation leading to an after effect
how does prism glasses work?
shifts gaze 20 degrees RIGHT
what is pusher syndrome
perception of body posture ~18 degrees off center usually resolving in 6 months after a R MCA infarct affected the PL of the thalamus
which direction do patients with pusher syndrome lean?
the push themselves to the L
how are emotions represented in a L hemisphere injury
catastrophic reactions, depression, anxiety
how are emotions represented in R hemisphere injury
indifference, cheerful acceptance, emotional lability
how does global v local processing play into hemisphericity
R hemisphere sees global, L sees local/detail
show a word or object to the right visual field/left brain and the patient can _____. Show a word or object to the left visual field/right brain and the patient can____
- say/name it
- draw it, but not say it
