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confined to mathematical savants; it seems to coexist with many different skills.  sphere. That is, they are predominantly nonsymbolic, artistic, visual and motor. They include music, art, mathematics, forms of calculating and an assortment of other abilities, such as me- chanical aptitude or spatial skills. In contrast, left hemisphere skills are more sequential, logical and symbolic; they include lan- guage and speech specialization [see “The Split Brain Revisited,” by Michael S. Gazzaniga; SCIENTIFIC AMERICAN, July 1998].

Figure 3 confined to mathematical savants; it seems to coexist with many different skills. sphere. That is, they are predominantly nonsymbolic, artistic, visual and motor. They include music, art, mathematics, forms of calculating and an assortment of other abilities, such as me- chanical aptitude or spatial skills. In contrast, left hemisphere skills are more sequential, logical and symbolic; they include lan- guage and speech specialization [see “The Split Brain Revisited,” by Michael S. Gazzaniga; SCIENTIFIC AMERICAN, July 1998].