1 Institute of Anatomy, Ludwig-Maximilians University, Pettenkoferstrasse 11, 80336, Munich, Germany.
2 Washington National Primate Research Center and Department of Ophthalmology, University of Washington, Seattle, WA, 98195, USA.
3 Institute of Anatomy and German Center for Vertigo and Balance Disorders-IFB, Ludwig-Maximilians University Munich, Pettenkoferstrasse 11, 80336, Munich, Germany. Anja.Bochtler@med.uni-muenchen.de.