Table 4.

Significant correlations between peak cluster volume and neurobehavioral test scores in the Valine homozygotes

Seed	PCC	DCP seed					DRP seed
Peak cluster	Superior medial frontal	Superior occipital	Middle occipital	Superior parietal	Postcentral	Caudate	Angular	Middle occipital	Paracentral lobule	Caudate	SMA	Postcentral
CASI EFT scores	−0.05	0.15	0.12	0.20*	0.09	−0.05	0.05	0.08	−0.12	0.13	−0.05	0.05
Abstract thinking	0.10	0.19	0.05	0.15	0.15	−0.10	0.07	0.03	−0.10	0.20*	0.07	0.13
Hallucination	0.04	0.02	0.06	0.19**	0.11	−0.05	−0.03	0.09	0.21*	0.05	0.00	−0.13
Aggression	0.18	0.20*	0.20*	−0.01	0.06	0.12	0.24*	0.26**	0.13	0.00	0.25*	0.08
Depression	0.11	0.09	0.04	0.03	0.20*	−0.03	0.16	0.04	0.06	0.17	0.12	0.27**
Elation	−0.02	−0.24*	−0.26**	−0.12	−0.06	−0.07	−0.24*	−0.24*	−0.17	−0.06	−0.12	−0.10

The CASI seed regions are dorsal rostral putamen (DRP) and dorsal caudal putamen (DCP)

MMSE Mini-Mental State Examination, EFT executive function test, CASI cognitive ability screening instrument, PCC posterior cingulate cortex, SMA supplementary motor area

Numbers indicate Pearson’s correlation coefficients—*p < 0.05; **p < 0.01