Research Article

The Association between DRD3 Ser9Gly Polymorphism and Depression Severity in Parkinson’s Disease

Figure 2

The interaction between groups and genotypes found in the right medial frontal gyrus. The finding was obtained via two-way factorial analysis of covariance (ANCOVA: groups × genotypes; groups: PD and HC, genotypes: Ser/Ser carriers and the Gly carriers) adjusting for age, gender, and education. A corrected threshold by Monte Carlo simulation was set at . The color bar indicates the F values from ANCOVA. Abbreviations: PD, Parkinson’s disease; HC, healthy control; ALFF, amplitude of low-frequency fluctuations; DRD3, dopamine receptor D3 gene; R, right; L, left.