1. Institute of Pharmacy, Pharmacology and Toxicology, University of Innsbruck, Innsbruck, Austria
2. Institute of Zoology, University of Innsbruck, Innsbruck, Austria
3. Department of Physiology and Medical Physics, Medical University Innsbruck, Innsbruck, Austria
4. Physiology Division, Karl Landsteiner University of Health Sciences, Krems, Austria
5. Division of Neurobiology, Department of Neurology, Medical University Innsbruck, Innsbruck, Austria