Table 2.

Correlation between striatal dopamine synthesis (K_i^cer) and frontostriatal connectivity (FA)

FA	Left AST		Right AST		Left LST		Right LST
	r	p	r	p	r	p	r	p
Healthy controls
Left DLPFC-AST	-0.277	0.384
Right DLPFC-AST			-0.19	0.553
Left VMPFC-LST					0.077	0.812
Right VMPFC-LST							0.231	0.471
Treatment-responsive schizophrenia
Left DLPFC-AST	-0.629*	0.028
Right DLPFC-AST			-0.21	0.513
Left VMPFC-LST					0.112	0.729
Right VMPFC-LST							0.329	0.297
Treatment-resistant schizophrenia
Left DLPFC-AST	-0.07	0.829
Right DLPFC-AST			-0.182	0.572
Left VMPFC-LST					-0.049	0.88
Right VMPFC-LST							0.427	0.167

^*correlation is significant at the 0.05 level (2-tailed).

FA, fractional anisotropy; K_i^cer, influx constant; DLPFC-AST, dorsolateral prefrontal cortex-associative striatum; VMPFC-LST, ventromedial prefrontal cortex-limbic striatum; AST, associative striatum; LST, limbic striatum; r, correlation coefficient; p, significant level