The frontal lobes are connected with all of the other lobes of the brain and they receive and send fibers to numerous subcortical structures as well (Fuster 1997). While control of motor function takes place in the posterior region of the frontal lobes, the anterior region of the frontal lobes (prefrontal cortex) plays a kind of executive regulatory role within the brain (Giancola and Moss 1998; Goldberg 2001; Lichter and Cummings 2001). More precisely, prefrontal cortex is important for cognitive flexibility, problem solving, attention, speed in information processing, abstractive and planning skills, inhibition, and suppression of irrelevant information (Raine et al 1998; Blair and Cipolotti 2000; Davidson et al 2000). Normally, the prefrontal cortex inhibits the occurrence of unnecessary or unwanted behaviors, but disruptions of these inhibitory functions often will release previously inhibited behaviors. For example, patients with lesions of the frontal lobes exhibit impulsive aggression (Kuruoglu et al 1996; Deckel 1999; Blair and Cipolotti 2000). Additionally, induction studies of transient anger are associated with orbitofrontal activation, suggesting a role for this region in anger regulation (Dougherty et al 1999;
