“…Cues associated with addictive drugs such as alcohol, cocaine, morphine, and nicotine trigger craving in some individuals, which may be conducive to relapse (e.g., Flannery et al, 2003;Litt et al, 2000). From the animal literature, it is well documented that stimuli associated with drug administration can reinstate drug-seeking behavior following extinction or prolonged abstinence (e.g., Bienkowski, et al, 1999;Gracy et al, 2000;Katner and Weiss, 1999;Weiss et al, 2000Weiss et al, ,2001.…”