1. Neuroscience and Cognitive Science Program; University of Maryland; College Park MD 20742 U.S.A.
2. Department of Mechanical and Aerospace Engineering; Polytechnic Institute of NYU; Brooklyn NY 11201 U.S.A.
3. Department of Microbiology and Immunology; University of Maryland School of Medicine; Baltimore MD 21201 U.S.A.
4. Department of Biological Sciences; Bowling Green State University; Bowling Green OH 43402 U.S.A.
5. Department of Aerospace Engineering & Institute for Systems Research; University of Maryland; College Park MD 20742 U.S.A.