Table 1.

Percentage distribution of cortical projections

	PFC bundle (%)	MB bundle (%)	BC bundle (%)	DRT (%)
Cortical region (Desikan/Killiany)
Superior-frontal	18	12	30	17
Caudal middle-frontal	8	6	17	8
Precentral	31	57	31	59
Postcentral	22	23	10	16
BA 6 segmentation (HMAT)
SMA	4	19	18	23
pre-SMA	1	6	15	6
dPMC	11	21	25	23

Percentages of fibers reaching specific subcortical WM targets are given relative to the whole projection of a particular bundle. Note, the percentages do not sum up to 100%, because the sub-bundles are not fully disjoint due to streamlines outside of the cortical parcels