*1.2.1 Frontal lobe*

The main functions to evaluate correspond to the motor paradigm, which traditionally has an anatomical correlate in the primary motor cortex in the precentral gyrus, and surrounding subcortical regions, therefore it is necessary to map this area to avoid contralateral paresis or plegia. Corona radiata is considered the posterior subcortical limit of a frontal lesion resection. Cortical mapping is performed by asking the patient to perform movements while stimulating the specific area with respect to the Penfield homunculus, which will lead to its inhibition, or in a patient at rest the stimulation will cause involuntary movement [21, 22] **(Vignette 1).**
