Functional MRI of the brain can provide detailed images of human brain that reflect localized changes in cerebral blood flow and oxygenation induced by sensory, motor or cognitive tasks. While more complex functions can be explored only by high-field magnets equipped with echo-planar (EPI) facilities and sophisticated statistical methods of analysis, motor and visual functional activation studies can also be performed with conventional magnets, considering that these conditions are associated with more pronounced signal increases.
Experience obtained in patients with a series of lesions located in the para-central (rolandic) area are reported and analyzed.
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