Figure S1. (A) 3T magnetic resonance imaging (MRI) demonstrated a subtle hyperintensity on fluid attenuated inversion recovery (FLAIR), extending from the anterior pole of the right lateral ventricle to the right prefrontal cortex, suggesting a transmantle cortical dysplasia. (B) [18]Fluorodeoxyglucose positron emission tomography (FDG-PET) showed a corresponding area of subtle hypometabolism. (C) Subtraction ictal SPECT coregistered to MRI (SISCOM) revealed an area of hyperperfusion in the right anterior frontal region. Injection was 12 seconds after the clinical seizure onset.

Figure S2. Responses characteristic for the supplementary motor area such as negative motor phenomena and tonic contractions of the left hemibody or left extremities were acquired 2.5 cm posterior to the seizure onset.

EPI_2548_sm_f1.tif2897KSupporting info item
EPI_2548_sm_f2.tif1934KSupporting info item

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