Table 2.

Summary of Subcortcial Volumes and TB

Measure	Volume (ml) Total	Volume (ml) MZ	Volume (ml) DZ	Volume (ml) Sibling
Thalamus (s.d.)	14.9 (1.5)	15.1 (1.4)	14.9 (1.6)	15.4 (1.3)
Caudate N. (s.d.)	6.8 (0.9)	6.8 (0.7)	6.8 (1.0)	7.0 (0.8)
Putamen (s.d.)	10.1 (1.2)	10.2 (1.2)	10.1 (1.1)	10.2 (1.3)
G. Pallidus (s.d.)	3.2 (0.3)	3.2 (0.3)	3.2 (0.4)	3.3 (0.3)
Hippocampus (s.d.)	8.8 (0.8)	8.9 (0.8)	8.7 (0.8)	8.9 (0.8)
Amygdala (s.d.)	3.1 (0.4)	3.1 (0.4)	3.0 (0.4)	3.2 (0.3)
N. Accumbens (s.d.)	1.1 (0.1)	1.1 (0.2)	1.1 (0.1)	1.1 (0.1)
TB (s.d.)	1189.9 (120.1)	1207.6 (124.3)	1160.0 (113.5)	1220.1 (117.7)

S.d. stands for standard deviation.