Table 3.

Average numbers of streamline fibers connecting non-cortical regions (non) and the cortices of two cortical folding patterns: 3-hinges (h3) and 2-hinges (h2)

	h3	h2	non
Human
h3	7.49 ± 0.78	11.59 ± 0.75	2.14 ± 0.43
h2	11.59 ± 0.75	7.16 ± 0.47	1.60 ± 0.34
non	2.14 ± 0.43	1.60 ± 0.34	0.87 ± 0.31
Chimpanzee
h3	4.47 ± 1.30	8.14 ± 1.67	2.51 ± 0.80
h2	8.14 ± 1.67	5.10 ± 0.97	2.29 ± 0.55
non	2.51 ± 0.80	2.29 ± 0.55	1.12 ± 0.36
Macaque
h3	4.85 ± 0.55	6.75 ± 0.86	4.01 ± 1.12
h2	6.75 ± 0.86	3.28 ± 0.95	3.28 ± 0.93
non	4.01 ± 1.12	3.28 ± 0.83	2.91 ± 1.22

The numbers were corrected by connected cortical areas and were averaged over subjects within each species. The total number of streamline fibers for each subject is 4 × 10⁴