Table 1.

Measurements of corpus callosum morphology for Einstein and two different age control groups

measurements	Einstein		Control (old)				Control (young)
	mean	SD#	mean	SD	z	P	mean	SD	z	P
CC mean thickness (mm)	7.88	0.05	6.11	0.56	4.13	0.0000**	7.50	0.56	2.29	0.0222*
Middle line length (mm)	99.07	0.65	107.61	7.09	−3.58	0.0003**	96.23	7.01	1.35	0.1772
CC length(mm)	79.49	0.24	77.87	4.48	0.81	0.4208	75.34	4.89	2.84	0.0045*
CC area (mm2)	771.71	2.34	668.91	50.69	3.58	0.0003**	728.47	82.34	2.02	0.0435*
CC perimeter (mm)	221.00	0.61	235.69	14.15	−3.02	0.0000**	213.40	15.25	1.71	0.0867
CC circularity (×50)	9.93	0.07	7.63	0.97	4.13	0.0000**	10.08	0.93	−0.81	0.4160
Max in genu (mm)	12.39	0.07	9.61	1.28	4.13	0.0000**	11.96	1.42	1.75	0.0799
Max in midbody (mm)	7.72	0.28	5.96	0.64	3.86	0.0001**	7.34	0.67	2.21	0.0271*
Min in isthmus (mm)	5.87	0.17	3.89	0.61	4.13	0.0000**	4.88	0.90	3.19	0.0014*
Max in splenium (mm)	15.25Δ	0.08	11.35	1.24	4.13	0.0000**	12.32	1.18	4.97	0.0000**
Brain weight (g)	1230	-	1219.01	102.93	-	-	1374.13	111.56	-	-
Brain volume (cm3)	-		1127.67	95.22	-	-	1271.17	103.20	-	-

The Mann–Whitney U test was used to compare measurements of Einstein’s corpus callosum with the two different age control groups, respectively.

# Standard deviation of measurements.

ΔEinstein’s maximum callosal thickness is significantly greater than that of both the old and young control groups.

The asterisks indicate statistically significant differences between the control groups and Einstein, *P < 0.05, **P < 0.001.

CC = corpus callosum.