Table 4.

Relationship between event-related brain potentials (ERPs) and risky decision-making, impulsivity, and clinical features within individual and whole groups.

	FRN		P300
	Amplitude (μV)	Latency (ms)	Amplitude (μV)	Latency (ms)
BART (MA group)
Total score	-0.027	0.032	-0.115	-0.240
Number of burst  balloons	0.477*	0.349	0.284	-0.050
Averaged pumps	0.304	0.230	0.157	-0.031
Decision-making  time	0.091	0.002	0.307	0.084
BIS (MA)	0.219	0.143	0.032	0.018
Years of MA use	-0.219	-0.080	-0.266	0.189
Days of abstinence	0.088	0.123	0.196	-0.243
BART (HC group)
Total score	-0.031	-0.181	0.118	-0.204
Number of burst  balloons	0.163	0.104	0.047	-0.188
Averaged pumps	0.112	0.071	0.021	-0.167
Decision-making  time	-0.332	0.303	-0.030	0.602*
BIS (HC)	0.134	0.056	0.129	-0.222
BART (all subjects)
Total score	-0.039	-0.074	0.012	-0.150
Number of burst  balloons	0.312*	0.217	0.140	-0.128
Averaged pumps	0.127	0.034	0.114	0.042
Decision-making  time	-0.186	0.063	0.118	0.301*
BIS (all subjects)	0.303*	0.276*	-0.006	-0.300

The data were correlation coefficient, *P<0.05. BART, balloon analogue risk task; BIS, Barratt impulsiveness scale.