Brain, Vol. 124, No. 9, 1681-1682,
September 2001
© 2001 Oxford University Press
Editorial |
Appearances may not be deceiving: calculation deficits due to a brain structure abnormality in neurologically normal children
Cognitive Neuroscience Section, National Institute of Neurological Disorders and Stroke, Bethesda, Maryland, USA
Calculation is an essential function learned in childhood that humans use in everyday life for many purposes. Calculation deficits typically occur in adults after left parietal lobe lesions (Grafman et al., 1982
). Historical evidence suggested that, more specifically, the region of the left angular gyrus was crucial for the mediation of calculation, but more recent research using functional neuroimaging and patient studies indicates that the left intraparietal sulcus may be even more important for the representation of specific calculation processes (Levy et al., 1999; Rickard et al., 2000; Rueckert et al., 1996). Regardless of the exact location in
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