Abstract
We examined cerebral activation patterns with positron emission tomography (PET) in 12 right-handed normal volunteers while they were completing simple calculation tasks or merely repeating numbers. Using a parametric experimental design, during calculation we found activation in the medial frontal/cingulate gyri, left dorsolateral prefrontal cortex, left anterior insular cortex and right anterior insular cortex/putamen, left lateral parietal cortex, and the medial thalamus. Number repetition engaged bilateral inferior sensorimotor cortex, bilateral temporal areas, and left inferior frontal cortex. These results suggest a functional anatomical network for simple calculation, which includes aspects of attention, auditory, and motor processing and the phonological store and articulatory loop components of working memory; they add some support for a special role of the parietal cortex in calculation tasks. (C) 2000 Academic Press.
| Original language | English |
|---|---|
| Pages (from-to) | 565-573 |
| Number of pages | 9 |
| Journal | NeuroImage |
| Volume | 12 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 1 Jan 2000 |
| Externally published | Yes |
Keywords
- Calculation
- Mental arithmetic
- Parietal cortex
- Positron emission tomography (PET)
- Repetition
- Working memory
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