This research was supported-in part by grants from the National Natural Science Foundation of China (Nos. 30870685, 81071142, 81071143 and 81201081) and the Development Project of Science and Technology of Shaanxi Province (Nos. 2008K12-02, 2009K01-65, 2010K16-03-01 and 2010K16-03-02).
Background Previous animal and neuroimaging studies have demonstrated that brain function in heroin addicted users is impaired. However, the posterior cingulate cortex (PCC) has not received much attention. The purp...