Prefrontal cortex activity is reduced in gambling and nongambling substance users during decision-making.
Tanabe J, Thompson L, Claus E, Dalwani M, Hutchison K, Banich MT. Prefrontal cortex activity is reduced in gambling and nongambling substance users during decision-making. Hum Brain Mapp. 2007 Dec; 28(12):1276-86.