1 Institute for Pharmacology and Toxicology, Otto-von-Guericke University MagdeburgMagdeburg, Germany; Center of Behavioral Brain Sciences, Otto-von-Guericke University MagdeburgMagdeburg, Germany.
2 Laboratory of Veterinary Ethology, The University of Tokyo Tokyo, Japan.
3 Institute for Physiology, Otto-von-Guericke University Magdeburg Magdeburg, Germany.