2.5.2. Rs‐fMRI connections of interest

Regions of interest were based on activations studies citing the involvement of the right middle occipital gyrus, right middle and orbital frontal areas, right parietal inferior areas, ³⁶ angular gyrus ³⁷ and the cerebellum ³⁸ in Stroop tasks and previous work conducted in our laboratory for which connections are illustrated in Figure S1.

Using the same sample, our previous work revealed that mean Stroop time in the SUD group was significantly linked to rs‐connectivity strength in seven connections: the right angular ‐ right superior occipital area, right middle occipital area and ‐ the interior parietal, ‐ middle orbital frontal, ‐ middle frontal, ‐ angular, ‐ cerebellar lobule IX and ‐ vermis 10 (Chirokoff et al. submitted). For the current study, connectivity strength within these connections was extracted both in the SUD and control group to be analysed conjointly with white matter integrity.