Fig. 1: Spatial distribution of intracranial electrode sampling.

a The figure shows the number of patients whose artifact-free, nonepileptic intracranial EEG data were available at each site. b The cerebral cortex was divided into four lobes using FreeSurfer (https://surfer.nmr.mgh.harvard.edu/fswiki/CorticalParcellation). Green represents the frontal lobe, white represents the temporal lobe, pink represents the parietal lobe, and blue represents the occipital lobe.