Figure 4. Effect of vehicle or muscimol injection into the right NBM on rCBF changes evoked by innocuous 3 Hz brushing.

The NBM injection site is indicated by Evans Blue dye injected at the end of the experiment (A). The scale bar represents 2 mm. The histograms show rCBF changes in the right PC after vehicle injection (B and D) and after muscimol injection (C and E) with left HL stimulation (B and C) and right HL stimulation (D and E). *P < 0.05, **P < 0.01.