Central Processing of Odour Stimuli in Patients With Functional Somatic Disorder, MCS or Post Covid Compared to Healthy Controls

The patients and controls will be evaluated using MRI and furthermore a large test battery of questionnaires and paraclinical tests. Including the following test: MCS checklist, BDS-Checklist, Symptom Checklist-92 (SCL-92), Whiteley-8, SF-36, Major Depression Inventory (MDI), GAD-10 anxiety scale, and related questionnaire, behavioral olfactory test (TDI), habituation test, pain measurement thresholds tests, Heart Rate Variability and cognitive testing.