1 Department of Otorhinolaryngology, Head & Neck Surgery, Martin Luther University Halle-Wittenberg, University Medicine Halle, Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany. stefan.plontke@uk-halle.de.
2 Department of Otorhinolaryngology, Head & Neck Surgery, Martin Luther University Halle-Wittenberg, University Medicine Halle, Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany.
3 Vestibular Research Laboratory, School of Psychology, The University of Sydney, Sydney, NSW, Australia.
4 Electrical Engineering, Chalmers University of Technology, Gothenburg, Sweden.