Figure 4

Significant repeated measures correlations between Stroop test variables (Stroop colors – SC, Stroop words/colors – SWC) and DTI metrics (FA, AD, RD and MD) of clusters with significant changes between timepoints. The x-axis represents average values of each DTI metric and y-axis, the average values of SC/SWC. Observations from the same individual are represented with the same color, with corresponding lines showing the repeated measures correlation fit for each subject. Dashed black line represents the overall regression line. All clusters, with the exception of RD cluster 1, were significantly associated with SC. For FA clusters, we found a positive correlation, meaning that higher FA values are associated with higher LTS scores. For AD, RD and MD clusters, a negative correlation was found, showing that lower AD, RD or MD values are associated with higher SC scores. Regarding SWC, FA cluster 1 was positively correlated and AD was negatively correlated. Overall, these results suggest that higher WM integrity is associated with higher cognitive performance in the executive function domain.