The detected activations in the putamen correspond well with the literature and accentuate the previous research on oxytocin and maternal behavior8,9,54. Since we know very little about the interactions of T and OT in the female brain, we abstained from using an a priori region-of-interest approach and analyzed our data on whole brain level. However, findings in the IFJ are not common in the context of OT administration studies and in an a priori region-of-interest approach the IFJ would have probably not been included. This might limit the interpretation of this finding, although the activation of the IFJ survived the correction for multiple testing on a whole-brain basis. Future studies will therefore be necessary to show if this finding can be replicated in this context.