Fig. 4.

Correlations between clinical parameters and the mean z value extracted from significantly different brain regions. (A) Spherical regions of interest (ROIs) located in the precuneus and the PCC, and their coordinates of peak activation. (B) The mean z value of the ROI extracted from the PCC was negatively related to insulin resistance (R = 0.404, P = 0.024). (C) The mean z value of the ROI extracted from the precuneus was positively correlated with the CFT-delayed recall scores in the diabetic group (R = 0.395, P = 0.020). (D) The mean z value of the ROI extracted from the precuneus had negative correlations with the time spent on the TMT-B (R = -0.346, P = 0.025). CFT, complex figure test; TMT-B, trail making test-part B; PCC, posterior cingulate cortex