SLC6A3 and dementia: As additional evidence of the regional difference between W-O and LID, a recent study by using a factor analysis based on the DAT availability in striatum, found a relationship between the posterior putamen, which belongs to the sensorimotor striatum, and a higher risk for LID, as well as an association between dopamine depletion in the anterior putamen and both early development of W-O and conversion to dementia [237].