Table 3

Volumes of brain regions by group

Brain regionSchizophrenic siblings mean (SD)Obligates 
 mean (SD)Non-affected, non-carrier siblings mean (SD)Significant between group differences by repeated measures ANOVA (df=2,3)
Volumes expressed in cm3.
Whole
    Brain1193.2 (50.2)1259.2 (85.6)1262.6 (68.0)SCH<OBL, NANC
(F=7.8, p=0.01)
Cortical
    Structures273.8 (9.5)293.7 (16.0)293.4 (13.4)SCH<OBL, NANC
        Prefrontal lobe left63.9 (6.3)67.8 (6.1)66.2 (3.4)(F=4.7, p=0.04)
        Prefrontal lobe right65.9 (3.0)71.1 (6.4)73.5 (7.5)
        Temporal lobe left70.9 (3.4)75.6 (6.9)74.2 (7.8)
        Temporal lobe right73.0 (2.4)79.3 (8.4)79.5 (6.9)
Subcortical
    Structures28.1 (2.4)27.6 (3.0)28.8 (2.7)No significant
        Thalamus left5.2 (0.3)5.3 (0.5)5.7 (0.5)between group
        Thalamus right5.2 (0.5)5.4 (0.6)5.7 (0.6)differences
        Caudate left4.0 (0.5)3.9 (0.5)3.8 (0.4)(F=3.2, p=0.095)
        Caudate right3.9 (0.5)3.7 (0.7)3.8 (0.3)
        Lentiform nucleus left4.9 (0.8)4.6 (0.7)4.8 (0.8)
        Lentiform nucleus right4.8 (0.6)4.6 (0.8)4.9 (0.7)
Amygdalohippocampal
    complexes7.8 (0.8)8.4 (0.5)8.8 (0.3)SCH, OBL<NANC
        Left3.6 (0.5)3.9 (0.4)4.1 (0.3)(F=16.5, p=0.001)
        Right4.1 (0.4)4.5 (0.2)4.7 (0.3)
Intracerebral
    Ventricular system16.6 (6.4)9.6 (5.2)18.9 (11.4)OBL<SCH
        Lateral ventricle left7.0 (2.9)5.0 (2.9)10.3 (7.6)(F=5.4, p=0.03)
        Lateral ventricle right7.9 (4.4)3.3 (1.8)7.0 (2.9)
        3rd Ventricle0.9 (0.3)0.6 (0.2)0.9 (1.0)
        4th Ventricle0.7 (0.3)0.8 (0.5)0.6 (0.1)