Table I.

Exploratory factor analyses of left and right gray matter volumes

	Left hemisphere				Right hemisphere
	Limbic factor (factor 1)	Dorso‐cortical factor (factor 2)	Posterior factor (factor 3)	Basal ganglia factor (factor 4)	Posterior factor (factor1)	Limbic factor (factor 2)	Dorso‐cortical factor (factor 3)	Basal ganglia factor (factor 4)
Frontal cortex	8	52	8	3	−9	6	47	17
Premotor cortex	49	26	−33	−27	30	26	34	−44
Sensorimotor cortex	13	69	6	−2	7	18	67	0
Parietal‐occipital cortex	13	71	−30	−10	26	−2	60	0
Orbitofrontal cortex	64	4	−20	20	44	59	−7	−4
Subgenual cortex	83	13	13	−25	5	73	10	−42
Midtemporal cortex	58	39	23	8	−7	56	37	−2
Inferior occipital cortex	−5	11	75	−4	−73	35	8	12
Caudate	0	−1	−8	22	10	−11	12	21
Putamen	−8	1	−5	55	9	7	−6	70
Globus pallidus	7	3	−14	62	3	3	13	38
Amygdala	53	7	−32	22	71	36	−1	21
Hippocampus	3	−1	3	10	−5	15	2	6
Brainstem	−22	−4	25	−10	−32	−5	−6	−4
Thalamus	3	28	−51	15	52	−13	13	5