Figure S3. Extracellular Arrays for Sham Studies. A, Extracellular arrays were placed symmetrically on either side of the greater curvature during sham extracellular mapping studies. B, The extracellular arrays are flexible PCBs with 32 total channels (2 columns of 16 electrodes). Electrodes are spaced 5 mm from each other in each column. Each column is separated by 5 mm.