FIG 1. Images from the case of a 6-year-old male patient.

A, Sagittal T1-weighted image from the right hemisphere shows perisylvian clustering of spike activity in the posterosuperior temporal gyrus or Wernicke's area.

B, Sagittal T1-weighted image from the left hemisphere shows perisylvian clustering of spike activity in the posterosuperior temporal gyrus or Wernicke's area.

C, Coronal T2-weighted image shows bilateral perisylvian clustering of spike activity in the posterosuperior temporal gyrus or Wernicke's area.

D, Six-second data epoch shows MEG wave forms from the left hemisphere above, right hemisphere below, and concurrent EEG in the middle. Numerous spikes are present bilaterally.