... spatial resolution along the distance axis. Bats Echolocation Virtual target Depth perception Range Distance is important: from an ecological perspective, knowledge about one's distance from either prey or predator is vital. The ‘classic’ remote senses vision and passive audition...

..., University of Cincinnati, Cincinnati, OH 45221-0006, USA (e-mail: john.layne@uc.edu ) † Present address: Mount Sinai Medical School, 1 Gustave L. Levy Place, New York, NY 10029, USA 6 9 2006 © The Company of Biologists Limited 2006 2006 depth perception insect vision flat world...