<unk>  has been linked primarily to an overstimulation of the dopamine D1 receptors and, to a lesser extent, of D2 receptors, which has been proposed to lead to substantial changes in the striatum (especially its dorsal and ventral areas) and the nucleus accumbens, some of the main dopaminergic areas of the brain regulating psychomotoric functions and reward mechanisms. On the other hand, it has been noted that patients with Parkinson's disease treated with dopaminergic drugs that selectively activate only D3 receptors are the least likely to develop<unk> .
Punding
Bursting
Logrolling 
Proning
Gargling
Quackery
Spooning
Death grip