Concomitant major internistic or neurological illness

Clinically relevant abnormalities on a general physical examination and routine laboratory screening

Current substance abuse, addiction

Current or past history of schizophrenia or schizoaffective disorder

Exposure to artificial radiation as volunteer in clinical studies within 10 years prior to inclusion into the present study

Previous treatments with electroconvulsive therapy

Treatment (\< 1 months before screening) with the following drugs: Aripiprazole, Risperidone, Ziprasidone, Clozapine, Chlorpromazine, Amitryptyline, Nefazodone, Trazodone, Buspirone, Pindolol, Penbutolol, Tertatolol, Alprenolol, Quetiapine

Investigations using PET or SPECT within 10 years prior to the inclusion

Effects of Electroconvulsive Therapy (ECT) on Serotonin-1A Receptor Binding

What this study is about