FIGURE 1.

Receptive language mapping with MEG with and without sedation. Language activity (dipolar) sources are represented as solid red circles projected onto the patients’ MRI, displayed in radiological convention. Left hemispheric dominance for receptive language in patients evaluated without sedation (A–C), and with sedation (D–F). (A) 7 year-old female with symptomatic frontal lobe epilepsy; (B) 8 year-old female with ganglioglioma of the left temporal lobe; (C) 16 year-old male with symptomatic partial seizures of right temporal lobe origin; (D) 2 year-old male with cervical medullary tumor; (E) 6 year-old male with symptomatic epileptic spasms of right hemisphere origin; (F) 6 year-old male with symptomatic partial seizures of left temporal lobe origin.