Acalculia
Terms
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- Who coined the term "akalkulia" when describing disturbances in calculation associated with brain damage?
- Henschen
- Which is more common, primary acalculia or secondary acalculia?
- secondary
- Hecaen proposed a classification system for acalculias based on presumed mechanism of disorder. What are his 3 classes of acalculia?
- acalculia associated with alexia and agraphia for numbers, acalculia of the spatial type, anarithmetria
- In ability to read or write numbers strongly suggests ___(right/left___ parietal lesion, but does not rule out involvement of the __(right/left)___ hemisphere.
- left, right
- Alexia for arithmetical signs with preserved reading of numbers is often associated with focal lesions in which hemisphere? in which lobes?
- left; parietal or temporo-occipital
- The spatial type of acalculia suggests post-rolandic lesion of which hemisphere?
- right
- Gerstmann's syndrome is associated with what 4 features?
- agraphia, right-left disorientation, finger agnosia, acalculia
- Gerstmann's syndrome is associated with which type of alcalculia - anarithmetria, spatial type, both, neither
- both anarithmetria and spatial type alcalculia
- Alcalculia of the spatial type generally is associated with ___(visual-constructive/auditory-verbal)___ impairments.
- visual-constructive. The right hemisphere is implicated and is rare with left hemisphere lesions.
- ___________ processing involves the ability to read or write individual numbers and ___________ processing involves the ability to combine numbers into the correct form and quantity.
- Lexical, syntactic
- Acalculia associated with alexia and agraphia, acalculia of the spatial type, and anarithmetria are most commonly associated with deficits in which hemisphere, respectively?
- left hemisphere; right hemisphere; left hemisphere and bilateral involvement