Fig. 4

Location based parameter extracted from the digit maps of the first session in MNI volume space. A Average locations of each digit’s center of gravity (CoG) in 3D space (large circles) and individual CoGs (smaller circles; each connected succession from D1 to D5 represents one participant). Average and individual CoGs follow the known lateral-to-medial (upper panels), inferior-to-superior (lower panels), and anterior-to-posterior (all panels) succession. No major differences can be observed between the TW and BD. B Average (large, colored circles) and individual (small, black circles) geodesic D1-D5 distances for both designs. Connected individual points belong to the same participant. No major differences can be observed between the two designs for the average D1-D5 distances. Error bars represent the standard error of the mean