Figure S10: Relationship between Euclidean distance and fiber length. (A) Scatter plot of Euclidean distance and fiber length for connections across all participants in the CHUV dataset. (B) The group-average Euclidean distance matrix obtained as the average distance between centroids across all participants. (C) Interpolated fiber length matrix, generated by the procedure described in the Appendix. (D) Scatter plot of group-average Euclidean distance versus interpolated fiber length. The red line in panel D is the identity line. Note that most connections have longer fiber length than Euclidean distance. However, a small number of connections have shorter fiber lengths. This occurs for connections that originate and terminate near the boundary of two parcels. In this case, the fiber length can be very short, while the Euclidean distance between the parcels can be long. 48