| Recruiting | N/A | 42 | Europe | Transcutaneous vagus nerve stimulation (tVNS), Transcutaneous auricular vagus nerve stimulation (taVNS), Sham transcutaneous vagus nerve stimulation (Sham tVNS), Sham Transcutaneous auricular vagus nerve stimulation (Sham taVNS) | Sahlgrenska University Hospital, Sweden | Borderline Personality Disorder | 12/24 | 12/25 | | |