Illustration of all stimulation locations/regions-of-interest. a Summary illustration of the individual stimulation locations for the sham (=green color) and the verum group (=red color). b Summary illustration of the locations of the individual peak-voxels within left prefrontal cortex for the sham group (=blue). These areas represent the areas that would have been stimulated if the participants had been placed in the experimental group. The red and blue ROIs were used to extract the average parameter estimates using MarsBar and served as seed region for the connectivity analyses. 5 mm spherical ROIs were constructed with MarsBar, and are overlaid on ch2better MNI template rendering with MRIcron (http://www.mccauslandcenter.sc.edu/mricro/mricron) for illustrative purposes.