acalculia
Pronunciation: ah-cal-CU-lee-ah
Acquired inability to perform mathematical calculations due to brain damage.
Full Definition
Acalculia refers to the acquired loss of mathematical abilities following brain damage, distinct from developmental dyscalculia. This condition can manifest as primary acalculia, where number processing itself is impaired, or secondary acalculia, where calculation difficulties arise from other cognitive deficits such as aphasia, alexia, or working memory problems. Primary acalculia is typically associated with left parietal lobe lesions, particularly in the angular gyrus and intraparietal sulcus. Assessment involves testing basic arithmetic operations, number recognition, and mathematical reasoning. The condition significantly impacts daily functioning and financial independence.
Usage
Usage note: Distinguish between primary acalculia and calculation difficulties secondary to other cognitive impairments.
In Context
- "Left parietal stroke resulted in severe acalculia affecting all arithmetic operations." — Neuropsychological assessment report
- "Secondary acalculia improved as the patient's working memory deficits were addressed." — Cognitive rehabilitation progress note