Figure 6. Effect of vehicle or muscimol injections into the right NBM on basal rCBF in the right PC (A) and left PC (B).

For the right PC, basal rCBF slightly but not significantly declined following vehicle and muscimol injections. Compared with basal rCBF after the vehicle injection, rCBF after the muscimol injection was decreased by only 6%. For the left PC, basal rCBF was comparable across conditions and showed no significant change.