期刊
NEUROIMAGE
卷 12, 期 5, 页码 565-573出版社
ACADEMIC PRESS INC
DOI: 10.1006/nimg.2000.0640
关键词
calculation; mental arithmetic; repetition; positron emission tomography (PET); parietal cortex; working memory
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.
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