OBJECTIVE To investigate the neuropsychological underpinnings of this impaired impulsive control network.METHODS Twenty two abstinent heroin dependent (HD) subjects and fifteen cognitively normal (CN) subjects participa ted in this study.Resting-state functional connectivity MRI was employed to measure abnormalities in the intrinsic amygdala functional connectivity (iAFC) network activity and the Barratt Impulsive Scale, 11 th version was used to measure impulsivity.