33. Special characteristics of cortical motor mapping in children

Direct Cortical Stimulation (DCS) for motor mapping and monitoring has special characteristics in children. Several physiological, pathological, and pharmacological factors determine higher cortical motor thresholds (CMT) in this population. It is known that physiological CMT to electrical or magnetic stimulation progressively decrease from the first months of life reaching adult values at about the age of 18years. Certain pathological conditions such as errors in neuronal migration, dysembryoplastic neuroepithelial tumor, cortical dysplasia, and retro-rolandic low grade glioma may further increase CMT.

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