Abstract (eng)
The aim of this study was to further investigate the extent to what the right supramarginal gyrus (rSMG) is involved in our empathic evaluation. We supposed that the rSMG is crucial for the comprehension of the emotional relevance of other-related information.
The study was conducted in a within-subjects design. In two separate sessions, we once applied continuous Theta Burst Stimulation (cTBS) on the rSMG and once on the vertex (control condition) on 40 young females. Afterwards, we measured other-related emotion intensity ratings in a task in which participants were presented with emotion eliciting other and self-related stimuli at the same time. Pleasant and unpleasant stimuli were used, leading to congruent and incongruent affective states between the participants and the persons they had to empathize with.
After cTBS of rSMG, participants specifically evaluated other-related pleasant stimuli as less intensive. Regarding unpleasant stimuli, the effect of cTBS was more ambiguous and not exclusive to other-related judgements. Furthermore, cTBS might have affected participants with certain inter-individual variability.
Despite partially heterogeneous results, we conclude that the rSMG is involved in integration processes concerning self and other-related information. These processes seem to be relevant for our empathic as well as our general emotional evaluation.