Supplementary materials [Sulcal pits]

The paper Sparse description of the cortical surface pediatric development: a sulcal pits study presents a method to identify pits homologies across a population of cortical surfaces. This method integrates the notion of sulcal basins to improve the matching of pits. Two examples below illustrate that the position of a pit after registration does not give enough information.

Data extracted from the Cincinnati MR Imaging of Neurodevelopment (C-MIND) database.

Illustration of basins' robustness for shallow, medium, and deep pits:

These maps present the addition of all the basins across the population (241 registered subjects) associated to a given label.

Left column: method 1, taking only the pit into account

Right column: method 2, using the sulcal basin

(see the paper for more details).