Participants’ characteristics.

Data is expressed as means (SD), with paired Students’ t-test indicating statistical differences between the Sham and the Verum Group. 95% CI = confidence interval, STAI state trait anxiety inventory (with the subscores–T trait and–S state), MDBF multidimensional mood questionnaire, PASA primary appraisal secondary appraisal, HR heart rate HRV heart rate variability.