Fig. 4

a Correlation maps of task accuracy and gray matter density for patients groups. Significant positive correlations were found in right precentral gyrus, posterior central gyrus, middle frontal gyrus, superior frontal gyrus, bilateral vermis and 8,9 of cerebellum. b The scatter plots between significant cluster in cerebellum and task accuracy (r = 0.46, p = 0.01), as assessed by 2 back task