Fig. 5: Module boundaries are sharp.

a We use a partition’s convex hull to define its boundary, and then identify electrodes on the boundary that have a nearest neighbor that is inside the boundary and a nearest neighbor that is outside of the boundary (solid vs dashed lines). b Mean pairwise conditional Granger causality for boundary to inside and boundary to outside pairs for the individual MEAs and across all MEAs (last pair of bars). c Trial-averaged responses during the category recognition task from a unit on the boundary, a nearest neighbor inside the boundary, and a nearest neighbor outside of the boundary. d The average correlation across trials between neural responses (or response similarity) for within and across boundary pairs. Error bars in (b) and (d) represent standard errors.