Institution: | (1) Lehrstuhl für Allgemeine Zoologie, Ruhr-Universität Bochum, D-4630 Bochum, Federal Republic of Germany;(2) Division of Biological Sciences, University of Missouri, 65207 Columbia, Missouri, USA;(3) Section of Neurobiology and Behavior and School of Electrical Engineering, Cornell University, 14853 Ithaca, New York, USA |