VR-relaxation for ECT-related Anxiety

The goal of this clinical trial is to learn if there is an effect of Virtual Reality (VR) based-relaxation on electroconvulsive therapy (ECT)-related anxiety. The main questions it aims to answer are: * Does VR based-relaxation have an effect on anxiety in patients receiving ECT as part of routine clinical care? * Does VR based-relaxation have an effect on stress symptoms and heart rate in patients receiving ECT as part of routine clinical care? * Does depression severity have an effect on the effectivity of VR-based relaxation Researchers will compare VR-relaxation to relaxation breathing exercises and no relaxation to see if VR-based relaxation has an effect on ECT-related anxiety.

Inclusion Criteria: * Age 18-75 years * Being treated with ECT, having had at least two sessions at study start * Able to understand study procedure and sign informed consent * Speaking Dutch or French * DSM-5 diagnosis of a depressive disorder, for which ECT treatment has been initiated Exclusion Criteria: \- Contra-indications for VR: photosensitive epilepsy, severe travel sickness, vertigo, open wounds on the face