For several decades, addiction has come to be viewed as a disorder of the dopamine neurotransmitter system; however, this view has not led to new treatments.  Numerous studies suggest that stimulants increase striatal dopamine levels and some evidence that alcohol may have such an effect. Past studies also show that striatal dopamine receptor availability and dopamine release are diminished in individuals with stimulant or alcohol … Continue reading Researchers identify specific neuron-type responsible for alcoholism.