The purpose of this thesis is the investigation of vestibular processing regions during artificial stimulation and rest, with the following questions: 1. Based on current evidence, which regions are involved in vestibular processing, and what is the evidence for the current theories of cortical vestibular processing? 2. What methodical issues influence the results? Are different findings related to stimulation method or neuroimaging modality, preprocessing parameters, imaging artefacts or how the stimulation is modeled? 3. What is the relationship between the stimulation-activated or -deactivated regions during rest? 4. How are these regions related to known functional networks?