Table 5.

Results of regression analyses run through hominoid and anthropoid values.

	ʎ	Regression equation	R2	P-Value	95% Prediction interval	Human residual (%)
HOMINOIDS
Amygdala	0	y = 0.78x−1.87	0.99	<0.001	0.23 – 0.33	7
A. Lateral nucleus	0	y = 0.68x−2.34	0.97	<0.001	−0.56 – −0.35	37*
B. Basal nucleus	0	y = 0.78x−2.37	0.98	<0.001	−0.33 – −0.13	−30*
C. Accessory basal nucleus	0	y = 0.88x−3.04	0.91	<0.001	−0.84 – −0.38	−31
D. Central nucleus	0	y = 0.98x−3.49	0.95	<0.001	−0.98 – −0.61	−312*
Hippocampus	0	y = 0.40x−0.69	0.85	0.01	0.27 – 0.56	50*
Striatum	0	y = 0.74x−0.95	0.97	<0.001	0.91 – 1.25	−27
Orbital frontal cortex	1	y = 0.93x−1.32	0.92	0.01	1.07 – 1.99	11*
Medial frontal cortex	0	y = 1.12x−1.46	0.99	<0.001	1.66 – 2.24	−26*
Insular cortex	0	y = 1.14x−2.26	0.98	<0.001	1.13 – 1.40	−9
Dorsal frontal cortex	1	y = 1.17x−1.20	0.99	<0.001	2.14 – 2.51	−29*
ANTHROPOIDS
Amygdala	0	y = 0.69x−1.77	0.97	<0.001	0.19 – 0.46	20
A. Corticobasolateral	0	y = 0.68x−1.90	0.97	<0.001	0.05 – 0.32	23
B. Centromedial	0	y = 0.71x−2.39	0.95	<0.001	−0.42 – −0.03	9
Septal nuclei	0	y = 0.74x−2.22	0.98	<0.001	−0.09 – 0.14	19
Hippocampus	0	y = 0.75x−1.51	0.93	<0.001	0.53 – 1.03	−17
Schizocortex	0	y = 0.77x−1.89	0.95	<0.001	0.23 – 0.66	10
Striatum	0	y = 0.91x−1.41	0.98	<0.001	1.20 – 1.49	−54*

^*Significant (p < 0.05) human deviations from predicted values based on prediction intervals, for subcortical structures, and student's t-tests on mean human values, for cortical structures.