Table 1.

Ratios of the cortical fiber density on gyri versus those on sulci at 0, 1, and 2 years of age

	0 year		1 year		2 years
Regions	Left	Right	Left	Right	Left	Right
Frontal lobe	2.00 ± 0.69	1.92 ± 0.53	2.46 ± 0.66	2.36 ± 0.58	2.54 ± 0.55	2.61 ± 0.56
Parietal lobe	1.61 ± 0.48	1.78 ± 0.55	1.17 ± 0.41	1.43 ± 0.44	1.28 ± 0.58	1.48 ± 0.56
Temporal lobe	2.87 ± 1.25	2.70 ± 1.17	1.68 ± 0.56	1.61 ± 0.56	1.68 ± 0.48	1.61 ± 0.51
Occipital lobe	1.19 ± 0.54	1.22 ± 0.69	0.74 ± 0.20	0.90 ± 0.25	0.95 ± 0.26	0.87 ± 0.23
Whole cortex	1.91 ± 0.44	1.93 ± 0.40	1.75 ± 0.38	1.77 ± 0.36	1.83 ± 0.39	1.88 ± 0.38

Left: left hemisphere; Right: right hemisphere.